Newsletter
The veterinarians and staff at New Haven Pet Hospital are pleased to provide you with an online newsletter. This fun and fact-filled newsletter is updated on a regular basis.
Included in the newsletter are articles pertaining to pet care, information on our animal hospital, as well as news on the latest trends and discoveries in veterinary medicine.
Please enjoy the newsletter!
Current Newsletter Topics
Holiday season adornments are attractive to all creatures. The ornaments, foods, gifts, wrappings, ribbons, lights and plants are all curiosities for pets. Pets investigate new items by sniffing, tossing, chasing, and finally by tasting. A few precautions are necessary to avoid the holiday crowds at the veterinary hospital.
The most common problems this time of year are stomach or intestinal disturbances caused by pets eating the holiday feast or other novelties. Scraps from the table can cause gastrointestinal upset and even predispose pets to life-threatening pancreatitis. Bones can get stuck in the mouth or perforate the intestines and should be avoided. Chocolate is poisonous to cats, dogs, and birds. Plastic wrap and aluminum foil (coated with good-tasting juices) are enticing but can cause intestinal damage (and even blockage) if eaten by the pet.
Other sweet treats, like gum and hard candies, can also make your pet ill. Sugar-free candies and gum are made with xylitol, a sugar substitute that can cause a drop in blood sugar, depression, loss of coordination and seizures in your pet. Xylitol is also linked to liver failure in dogs. Be sure to keep all candies, chocolate and other sweets out of your pet's reach. If you believe your pet may have ingested chocolate or candy, call your veterinarian immediately.
Chocolate with Wrappers
Be sure to properly dispose of leftovers and wrappers. Feed pets their usual diet. Treats formulated similarly to the pet's regular diet are generally healthy and safe. Also keep in mind (while cooking) that pets may not know about hot stoves or to stay out from underfoot. Keep pets away from the stove so they don't get burned or get hot foods spilled on them.
Several decorative plants are poisonous. Mistletoe and holly can cause stomach upset with vomiting and diarrhea. The berries of these plants are attractive, easily swallowed, and potentially fatal if consumed. Poinsettias, like the leaves of most any plant, can also cause stomach upset. Use artificial mistletoe and holly; keep other plants out of your pet's reach.
Mistletoe and Holly
Be sure Christmas trees are secured so that pets cannot pull them over. Omit preservatives from the tree-stand water and cover the water so pets don't drink it. Don't spray snow on the tree unless it is labeled for pet consumption. Angel hair is spun glass and is irritating to both the inside and outside of your pet. Even glass ornaments and ornament hooks have been chewed and swallowed. These objects can cause problems from stomach upset to damaged intestines. Low-hanging ornaments are a real temptation, as are tinsel and electric lights. Decorative lights and electrical wiring can cause shock or burns when chewed, soremember to unplug holiday lights when pets are unattended.
Holidays have lots of activity going on. Be sure doors are not left open as guests come and go. Indoor pets inadvertently left outside could be injured by frostbite, cars, or other animals. Ice-melting chemicals and salt on sidewalks and roads can severely burn foot pads and should be washed off right away. Also, watch that guests don't leave interesting objects, such as chocolate, ribbons, stocking stuffers, or other illicit treats, within your pet's reach.
Holidays can also be as stressful for your pet as they are for you. Large gatherings of unfamiliar people may cause your dog or cat unnecessary stress and worry. If your pet does not interact well with strangers, keeping him or her in a separate room during the festivities may help keep your pet relaxed and worry-free.
Don't leave food items under the tree with an unsupervised pet; the wrapping, ribbon and enclosed gift are probably not compatible with your pet's digestive system. Ask Santa to put gifts out of your pet's reach so your pet won't beat you to them on Christmas morning.
When choosing a gift for your pet, consider the pet as an individual. Cats enjoy lightweight toys they can bat around, catnip toys, scratching posts, and kitty perches. Dogs like balls, chew toys, and things they can carry around. However, beware of toys with parts, such as bells, buttons, string, yarn, or squeaky parts, that can be detached and swallowed. Watch how your pet handles a new toy until you are sure it is safe. Some dogs treat a stuffed toy like a friend and carry it around and sleep with it. Others will tear them up and eat the stuffing and get into trouble. Also, if there is more than one pet in the household, consider all the pets before buying for any one of them. A one-inch diameter toy for a cat is fine, but a puppy in the household may swallow it and possibly require surgery to remove it.
If your pet does get sick, consult your veterinarian before giving any medications. Many of the over-the-counter drugs, such as acetaminophen - Tylenol(r) and Excedrin(r) and ibuprofin - Advil(r), Motrin(r), are toxic for animals even though they are safe for us. Don't wait to see if your pet gets better. If your pet is acting sick, consult your veterinarian.
You can learn a lot about the health of your pet from his or her urine. This smelly yellow liquid provides a variety of clues that can help your veterinarian solve the mystery of your pet's health.
Like people, pets should have yellow urine that has a characteristic odor. Most pets develop a pattern and urinate with the same frequency each day.
Changes in frequency of urination, blood in the urine and pain during urination are common signs of infection and/or irritation. Most pet owners are very good at noticing these signs.
Your pet's urine can be collected at home or in the veterinary hospital. The 'free catch' method for collecting urine can be done at home. When walking your dog, slip a plastic bowl or container under his leg when he stops to urinate. To speed up the process, you can feed your dog several ice cubes before leaving for the walk. Free catch does not require intensive labor, money, or time, nor does it upset your pet. There are some disadvantages to the free catch method. The free catch method does not provide sterile urine and may be contaminated by bacteria from the environment. If the urine is not transported immediately to the hospital, some of the tests may yield inaccurate results.

Urine Collection Vial
Your veterinarian or a veterinary technician can obtain a fresh urine sample from your pet by catheterizing the bladder. This collection procedure requires the animal's cooperation and often requires sedation.
Once the urine is obtained, the first thing examined is the sediment. Sediment refers to the cells floating in the urine. An increased number of white blood cells signals inflammation and helps with the diagnosis of a bladder infection. With bladder infections, large numbers of bacteria may also be present.

Urine Sediment of a Dog.
White Blood Cells and Bacteria are Shown
Due to the long length of the urethra, female dogs are more prone to urinary tract infections than male dogs. Diabetic animals have an increased amount of glucose in the urine, which may promote bacterial growth and cause infection.
Animals can form bladder stones due to a genetic condition, if urine flow is decreased or if the bladder wall is irritated. Stones can sometimes be seen on x-rays and they can often be located during ultrasound examination. Surgery is usually required to remove large bladder stones.

X-Ray Showing 2 Bladder Stones
Examination of the urine is also important for diagnosing kidney disease. The specific gravity (of the urine) compares the weight of urine to the weight of water, detecting functional problems with the kidneys. The specific gravity indicates how well the animal is concentrating its urine. If the specific gravity is low (approaching that of water), the kidneys may not be eliminating the body's waste products properly into the urine. Instead of eliminating the waste products into the urine, they accumulate in the blood stream and cause problems.
Various minerals can solidify in urine to form casts and crystals. The presence of calcium oxalate crystals, for example, can be found as a result of ethylene glycol (antifreeze) toxicity. Ammonium biurate crystals are red flags for liver disease. The most commonly found crystals are triple phosphate (magnesium ammonium phosphate) and can signify a bladder infection.

Various Urinary crystals (A) Calcium Oxalate Crystals (B) Uric Acid Crystals
(C) Triple Phosphate Crystals with Amorphous Phosphates (D) Cystine Crystals
The kidney is composed of a series of tubules that aid in making urine. Substances are either absorbed back into the body or excreted in the tubules as urine. If casts are found in the urine, this may indicate a problem with the tubules in the kidney. Casts are solid clumps of protein cells or red and white blood cells. These cells collect in the tubules and are shed sporadically. These casts have a tube-like shape and can be seen under a microscope.

Large Granular Urinary Cast

Red Cell Granular Cast and Numerous Erythrocytes.
Early Stages of Acute Kidney Disease
Urine is so much more than a waste product. Your pet's urine test means a lot for his or her health. It provides many interesting diagnostic clues that help determine what's going on inside your pet!
Scientists believe that the predecessor to the first land carnivores was most likely an animal called Miacis. Miacis lived about 55 million years ago and fossils show that the animal looked somewhat like a weasel.
Drawing of a Miacis Skeleton
The cat family split from other mammals about 40 million years ago, making them one of the oldest mammalian families. The best-known cats of pre-history were probably the saber-toothed cats (Smilodon) that lived during the late Pleistocene era (1.8 million to 10,000 years ago). Saber-toothed tigers, forerunners of the modern cat, were named for their sharp dagger-like canines. Able to kill full-grown elephants, these animals were plentiful in Europe, Asia, Africa and North America. Their small brain, large body and cumbersome teeth led to their extinction about 10,000 years ago.
Saber-Toothed Tiger
Although the saber-toothed cat has no close living relatives, paleontologists reconstruct how Smilodon looked by comparing its bones with those of large cats living today. Often called a saber-tooth tiger, Smilodon was not actually related to the tiger, although it may have behaved a bit like one. Scientists have determined that the saber tooth's skeleton was not built for speed. Very powerful front legs and a short tail indicate that it probably ambushed its prey, goring it with those fearsome canine teeth and leaving the victim to bleed to death.
Wild cats are believed to have evolved in Africa, and due to continental drift, eventually arrived in South America. About 2 million years ago, when North America and South America joined together, the cat made it's migration northward.
Evolutionary biologists agree that the domestic cat is a cross between Felis sylvestris (European wildcat) and Felis lybica (African wildcat). Of all the cats in existence, the domestic cat is the only one that has agreed to live with humans. Due to this fact, the domestic cat has been given the name "Felis domestica."
Cats were first domesticated by the Egyptians around 3000 BC in order to control the rodent problem in their cities. Since the Egyptians stored grain in woven reed baskets, rodents were able to chew through these baskets and eat the grain. With no devices, poisons or traps to fight the increasing rodent population, rats and mice swarmed through the cities. During this period, a small yellow cat with black stripes (the predecessor of today's domestic cat) began coming into the cities in order to feast on the rodents. The Egyptians welcomed these visitors and encouraged them to stay. The Egyptians named their new domestic animal "mau."
After realizing that cats had helped them solve their rodent problem, the Egyptians began holding them in high regard. Not only did the cat gradually take up residence in Egyptian households, but came to be revered and worshiped as being godlike. Bast, the Egyptian goddess of fecundity and beauty was depicted with the head of a cat. This beautiful goddess was the symbol of light, heat and solar energy. It was believed that she controlled fertility, cured illnesses and took care of the dead souls. According to Egyptian history, cats were held in such high regard that their export was forbidden, and the penalty for killing a cat was immediate death.
Cats were mummified after death and buried in sanctified plots, often with supplies of mummified mice for the afterlife. In 1890, one such plot was found to contain the remains of 300,000 cat mummies. The mummies were wrapped in expensive colorful cloth and enclosed in engraved wooden cases. Many of these mummies were distributed to museums around the world.
Since they reproduced prolifically and lived long and healthy lives, the Egyptian cat population began to swell. For a long time, Egypt had held a strict rule that cats could not leave the country. Despite this rule, the Egyptians began selling cats to the Greeks. After several years of breeding, the Greeks started selling cats to the Romans, the Gaels, the Celts and later to the Europeans. Resulting from trade relationships between Asia and Europe, cats were being exchanged for silk. The Asians loved their cats and began breeding them right away. Several distinct breeds of cats were produced in Asia, such as the Siamese, the Balinese, and the Himalayan.
Previous to the introduction of the domestic cat, the only mouse hunters in ancient Europe were semi-domesticated weasels and skunks. The Romans, and to a certain extent, the Greeks, introduced the domestic cat to the rest of Europe. In European countries, the cat was not worshipped but kept as a companion as well as a rodent hunter. However, by the time the Black Death appeared in the 11th century, cats were once again held in high esteem for their rodent killing abilities.
The Middle Ages in Europe were the worst times for cats. Cats were believed to be agents of the devil, and thought to possess magical powers. Pope Gregory IX declared the cat to be a "diabolical creature" and authorized a total persecution. Persons who kept cats were suspected of being witches, and were put to death along with their feline companions. With rat extermination becoming urgently necessary, cats were beaten, killed and driven away from towns and villages.
In Tudor England, cats were burned as a sign of both Protestant and Catholic heresy. During the inquisition, the burning of heretics, Jews, witches and cats were just some of the atrocities that were committed. By the 15th century, the European cat was on the verge of extinction, thus allowing the population of rats to increase. For lack of cats, more than two thirds of Europe died from the Bubonic plague.
Eventually the witch-hunts ceased and cats once again became highly prized and beloved household pets.
Cats were first domesticated over 5000 years ago and have since become one of the most popular pets in the world. The first record of domestic cats in Great Britain dates back to 936 AD. By the mid 18th century, cats were fairly abundant in the United States. By the late 1800s distinctive breeds were being established and cat shows held, with the long-haired breeds being especially popular.
Although the North American continent had many varieties of wild cats, there had been no history of domestic cats preceding the arrival of the Europeans. The first domestic cats were imported in order to control the rodent population in the settlements. Eventually, cats became quite popular and the first American breed, the Maine Coon Cat, was established.
The Maine Coon Cat
Domestic cats now live on every continent except Antarctica and have been bred into more than fifty distinct breeds.

Planning an addition to the family? Introducing a new baby to the household can have a variable affect on current pets, particularly cats, dogs and birds. There are steps each family can take to smooth this transition.
Practice periodically carrying a doll around the house, as if it were the baby. This may seem odd, but it can help get a pet used to the baby as a focal point. Do this calmly, allowing the pet(s) to investigate gently by smelling the doll while assuming normal activity and routine, incorporating the doll as you would your baby. Ideally, your pets are going to get used to this addition and not even notice after a while.

Get your pets used to the sounds of the baby. A good website is PreparingFido.com. There you can order a CD of baby sounds, from crying to cooing, to get your pets used to these different baby noises. There is also a link to a page from the animal humane society with other helpful suggestions.
Have a friend or family member bring home a blanket from the hospital with the baby's scent on it, before you arrive home with the baby. Animals rely on their sense of smell to recognize familiar things, so introducing the baby's smell early may ease acceptance.
If you have specific questions, ask us! We are happy to help in this joyful time. We would also like to remind all parents never to leave any young children unattended with any pet, regardless of how reliable and calm the pet seems. Young children make sudden sounds and gestures that may startle a pet. It is never worth the risk of assuming that a pet is "just fine" with a child. We hear stories of bites and injuries, some very severe, under brief unsupervised circumstances. Use door gates and playpens to help with this responsibility. It keeps everyone calm and happy.

The staff at our hospital would like to develop a close relationship with you and your pet. You will find that among the members of our staff, we have interest and expertise in many species and specialties. Hopefully, your pet will never require more than routine care, but sometimes more complex issues arise.
In many cases, early detection and monitoring can help prevent problems and provide long-term management of existing conditions. We have found great satisfaction in keeping our patients comfortable and happy! Because some health conditions have a genetic basis, we know that puppies of certain breeds are more likely than average to show specific problems. We would like to offer you help with early detection of these, so that their effects, if present, can be minimized. Please scan the list below; it is an illustration of how pervasive genetic diseases are. If your breed is listed, please ask a member of our staff about the linked disease, screening test(s), and recommendations.

German Shepherd
This list is just a sample and is not exhaustive; ask us if your pet is pre-disposed to something so that we can discuss how to help. Some problems, such as heart valve disease, dental/periodontal disease, and skin allergies are seen in many breeds. Some of our suggestions may be hospital-oriented (lab-work, X-rays, etc.) while some may relate to home management. For example: a large breed puppy that is checked for hip dysplasia may have a long, relatively comfortable life if he/she avoids games of Frisbee and long runs; a King Charles Cavalier Spaniel placed on cardiac drugs pre-emptively may significantly increase its life expectancy.

King Charles Cavalier Spaniel
When should these problems be addressed? Before the problem is so severe that your pet is showing symptoms. More often than not, a few simple tests can give a diagnosis. From there, we work with you to keep your pet comfortable and symptom-free.

Boxer
| BREED | DISEASE/DISORDER | TEST |
| Beagle, Large Breeds | Hypothyroidism | Thyroid Blood Tests |
| Boxer, Cocker, Doberman | Cardiomyopathy | EKG, X-ray, Ultrasound |
| Boxer, Golden Retriever | Cancer – Various types | Physical Exam, Biopsy |
| Bernese Mountain Dog | Malignant Histiocytosis | Physical Exam, Blood Tests |
| Chinese SharPei | Renal Amyloidosis | Urinalysis, Blood Tests |
| Cocker Spaniel, Welsh Terrier and others | Glaucoma | TonoPen Ocular Pressure Monitoring |
| Dalmatian, Schnauzer | Urinary stones/ Obstruction | Urinalysis, X-ray, Ultrasound |
| Doberman, Rottweiler | Von Willebrand"s “hemophilia” | Blood test, Clotting Profile |
| King Charles Cavalier Spaniel | Mitral Insufficiency | EKG, X-ray, Cardiac Ultrasound |
| Large breeds (Lab, Golden, Shepherd, etc.) | Hip Dysplasia | PennHip X-ray of pelvis |
| Toy Breeds | Patella Luxation “loose kneecap” | Physical Exam |
| Wheaten Terrier | Glomerulonephropathy, Protein Losing Enteropathy | Urinalysis, Blood tests, Endoscopy and Biopsy |
Obesity is the most common nutritional problem of cats. Since most cats are relatively inactive, it is not surprising that up to 40 percent of all cats seen by veterinarians are overweight. Obesity puts a considerable number of cats at risk for associated diseases such as lameness, feline urologic syndrome, diabetes mellitus, skin problems and cardiac disease. Due to the amount of fat that is present in the body of an overweight cat, x-rays are sometimes difficult to assess and surgical procedures can be difficult to dangerous.
It is tempting to tiptoe around the issue of feline weight reduction. One reason is lack of client acceptance of the problem. The realization of owning an obese cat can sometimes prove awkward if the owner is also markedly overweight. More important to remember, however, is that although the "lose weight fast" mantra is appealing to humans, it can be deadly for cats. Rapid weight loss in cats is associated with hepatic lipidosis (fatty liver disease), most commonly seen in obese, spayed female cats undergoing a short-term "crash" diet.
Traditional high-fiber (up to 25 percent) weight-loss diets can also cause problems, such as excessive stool output, poor skin and coat condition and decreased nutrient digestibility and absorption. Weight loss can be achieved safely, however, with a low-fiber, low-calorie diet. Research has found that a cat can lose an average of 1.5 percent of their body weight per week over a 16-week period with no adverse effects. Ultimately, it is important to work with your veterinarian in order to find a diet that your cat likes, as well as having the ability to help your cat lose weight safely.
Another weight-loss tool on the horizon is L-carnitine. Obtained from diet or synthesized by the body, L-carnitine facilitates "fat-burning" and is already used in humans. Following studies, it has been concluded that a lipid solution of supplemental L-carnitine accelerates weight loss and may increase the rate of fatty acid oxidation in cats. It has been cautioned, however, that this effect requires further investigation. As with human diets, there is no magic feline diet pill!
Before embarking on a feline weight loss program, it is important to have your veterinarian assess your cat's body condition, current health condition and medical history. Weight reduction in cats is a tough problem. Research confirms that cats can lose weight safely with the proper diet, but with so many foods to choose from, it can be difficult to go it alone. Use both the advice from your veterinarian and the choice of your cat (if he won't eat it, then it might not be such a good choice!) to determine the right food. Just remember: as cats lose weight on a well balanced portion, they become more active and playful and have a healthier appearance. This is a win-win situation!
Make your own dog biscuits!
In a medium bowl, combine 1 cup of whole-wheat flour, 1/2-cup of all-purpose flour, 1/4-cup nonfat dry milk powder, 1/2 cup quick-cooking rolled oats, 1/4 cup yellow cornmeal.
Cut in 1/3-cup shortening until the mixture resembles coarse crumbs.
Stir in 1 egg.
Dissolve 1 tbsp. instant chicken or beef bouillon granules in ½-cup water then pour the liquid into the flour mixture as you stir with a fork.
Form the dough into a ball and knead on a floured board for five minutes. Divide the ball in half and roll each portion until 1/2 inch thick. Use a cookie cutter or shape your own biscuits.
Put six biscuits on a plate and microwave at medium heat for 5 to 10 minutes, or until firm and dry to the touch. Rotate plate every two minutes and turn biscuits over after half the cooking time.
Here are some other interesting recipes for Homemade Dog Biscuits:
Chicken Liver Cookies
Ingredients:
- 2 cups flour
- 1 cup wheat germ
- 1/2 cup cooked, chopped chicken livers
- 3 tablespoons vegetable oil
- 1 egg, slightly beaten
- 2 tablespoons chopped parsley
Instructions:
Preheat oven to 400°F. Combine flour and wheat germ. In separate bowl, beat egg with oil, add broth and parsley then mix well. Add dry ingredients to bowl a little at a time, stirring well. Fold in chicken livers and mix well. Dough will be firm. Turn dough out on lightly floured board and knead a few times. Roll out 1/2-inch thick and cut into shapes. Place on greased cookie sheet 1 inch apart. Bake for 15 minutes or until firm. Store in refrigerator. Makes about 24 cookies.
Dog Show Bait
Ingredients:
- 1 lb. pork or beef liver
- 2 eggs (shell too)
- 1/2 tsp. salt
- 1/2 cup corn meal
- 1/2-cup soy flour
- 1/2-cup whole-wheat flour
Instructions:
Blend first five ingredients, add whole-wheat flour until stiff, but not dry. Press into 8x8" pan. Bake at 250°F. for about 1 hour. Cool, cut into squares and store. Use as needed.
Peanut Butter Treats
Ingredients:
- 1 1/2 cup flour
- 3/4 cup oatmeal
- 1/3 cup wheat germ
- 1/4 cup peanut butter
- 1/4 cup salad oil
- 1/4 cup honey
- 1 teaspoon baking powder
- 1/2 cup water
Instructions:
Combine all ingredients and mix on low until mixed. Make into 1 teaspoon sized balls and place on a non-greased cookie sheet. Flatten balls to 1/4 inch using tines of a fork. Bake at 325°F for 15-20 minutes, or until golden. Makes 20 large cookies. After cooling you can cut them into fours for smaller treats.
No Salt Bars
Ingredients:
- 1 cup all-purpose flour
- 1 cup whole-wheat flour
- 1 cup powdered dry milk
- 1/2 cup wheat germ
- 6 tbsp. no-salt margarine
- 1 egg
1 tsp. brown sugar
Instructions:
Combine dry ingredients, cut in margarine and mix as pie dough. Beat sugar with egg and stir in. Add ½-cup cold water to make stiff dough. Knead on floured board and roll to ¼-inch thickness. Cut into rectangles 1X2 inches. Bake at 325°F until lightly browned on non-greased cookie sheet.
Oatmeal Wheat Germ Biscuits
Ingredients:
- 3 cups whole-wheat flour
- 3 cups oatmeal
- 1/2 cup regular wheat germ
- 5 tablespoons melted bacon drippings or margarine
- 1/4 cup molasses
- 1 cup evaporated milk
- 1 cup water
Instructions:
Mix dry ingredients together. Add remaining ingredients and blend until well mixed. Dough will be stiff. Chill for 30 minutes. Take rounded teaspoons of dough and roll into balls. Flatten and place on a lightly greased cookie sheet. Bake at 300°F for 1 hour.
Chicken Biscuits
Ingredients:
- 3 cups all-purpose flour
- 2 cups whole-wheat flour
- 2 cups cracked wheat
- 1 cup cornmeal
- 1/2 cup powdered non-fat milk
- 3 tbsp. salt
- 2-1/2 - 3 cups chicken broth
Instructions:
Mix dry ingredients. Add 2-1/2 cups broth, more if needed. Roll out dough and cut into desired shapes. Bake at 300°F for 45 minutes, turn off oven and let biscuits stand overnight. Store in canister.
There is little in scientific literature that indicates any negative effects of spaying a dog. The most recent research conducted by Tufts University School of Veterinary Medicine indicates that spaying, even on very young puppies (perhaps as young as eight weeks of age) is safe, and that the dog recovers within a few days.
Aside from having puppies, non-spayed females are more susceptible to mammary gland tumors, uterine infections and ovarian diseases. After the ovaries are removed, vaginal estrous bleeding is no longer a concern. The dull and shaggy coat appearance that often occurs in some dogs during the estrus cycle seems to disappear. Pyometra (infections of the uterus), which are extremely common in non-spayed bitches and almost always require emergency surgery, do not occur. Mammary tumors that get large and multiply quickly occur much less frequently in spayed female dogs.
Behavioral effects
The behavioral effects of dog spays are only positive. The bitch does not go into estrus (heat), the time of the cycle when she is receptive to males. (In non-spayed female dogs, there are generally about two heat cycles per year.) Since estrus does not occur in spayed female dogs, there are no bloody secretions on the carpets, upholstery or throughout the house. Non-neutered male dogs are attracted to females in heat. These male dogs travel long distances in order to mate with a bitch in estrus. This creates a nuisance, as the male dogs are fairly aggressive and remain in the vicinity until the heat cycle is finished.

Non-Neutered Male Dogs Are Attracted To Female Dogs That Are In Heat
Spaying does not really change the way a dog digests food. It does, however, affect the dog’s activity level. Non-spayed females have periods of greater activity during their estrus cycle. By removing the ovaries, as is done in an ovariohysterectomy (spaying), the female hormone levels are greatly reduced. Without the surge of estrus related hormones, there is no hormone-related increased activity level.
To make sure your dog does not become obese, it is necessary to regulate her diet and activity level. Adult dogs can have their rations cut back until you reach a point at which the dog maintains a stable weight. If this is insufficient, there are several good quality weight reducing dog foods that are available. Ask your veterinarian or a veterinary technician for a food that is right for your dog. Also, make sure your dog is exercised, even if it's for one long daily walk.
Psuedopregnancy
A normal, annoying, sometimes disappointing, and dangerous behavior pattern seen in unspayed female dogs is pseudopregnancy (also called false pregnancy or pseudocyesis). Pseudopregnancy is a condition that occurs slightly less than two months after estrus. The bitch develops enlarged mammary glands and an enlarged abdomen. She may even show typical "nesting" behavior associated with having puppies. Often, a stuffed toy or other inanimate object is taken to the "nest" and she appears to be protecting or even nursing it. Problems arise when she becomes aggressive or attacks a person or other animal whom she perceives as threatening her "offspring."

Pseudopregnancy Is A False Pregnancy Seen In Unspayed Female Dogs
The natural evolution and advantages associated with pseudopregnancy are still being debated. The most widely accepted theory is one that recognizes ancestral wolf behavior. In wolf packs, bitches who did not give birth to pups might act as the pups' "nursemaids." This particular behavior, as well as milk secretions, is associated with pseudopregnancy and results from production of the hormone prolactin. This is the same hormone that is produced during the final stages of a normal pregnancy. Thus, pseudo-pregnant behavior would prepare these nonpregnant bitches for their protective and nursing role. Obviously, for a dog that lives in a human household, and not in a pack, this behavior is inappropriate and undesirable.
Uterine infections are not uncommon in bitches that frequently experience pseudopregnancy. Once the pseudopregnant behavior has ceased, the bitch should be spayed in order to prevent this behavior as well as the infections from recurring.
Having your female dog spayed (ovariohysterectomy) is an inexpensive and realistic method of pet population control. The number of unwanted adult and young dogs that are euthanized each year in the United States is astounding. Aside from the pet overpopulation problem, spaying your female dog helps prevent — and even eliminates — medical problems associated with hormonal imbalances.
