Northwest Animal Hospital - Serving Grapevine and its surrounding communities since 1984

Pet Care:Newsletter

The veterinarians and staff at Northwest Animal 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

Pilling Your Cat

How to give your cat a pill:

So, the veterinarian has sent you and your cat home with a bottle of pills and some instructions. Don't worry - giving pills to your cat is not as difficult as it may appear. It's just a matter of know-how and plenty of praise.

One thing to remember though, giving a pill to a cat is not quite the same as giving a pill to a dog.

  1. Have someone hold your cat's front legs and chest from behind so you're free to do the rest, or vice versa. If you have trouble, wrap a blanket or towel around your cat.

  2. Put your hand on top of the cat's head, avoiding the lower jaw. Raise the head until your cat's nose points to the ceiling. As the mouth opens, use your other hand to hold the pill and press down on the lower jaw, pushing the pill as far back on the tongue as possible.
Ear Scratching And Head Shaking

Normal ears of dogs and cats have a relatively smooth inner lining with a minimal amount of wax buildup. Any one of several problems can cause the ear canal to become filled with odoriferous debris. Your pet will probably tell you its ears are uncomfortable by excessive scratching and head shaking. Early treatment of ear problems is important to prevent complications such as damage to the inner ear, long-term infections, and hearing loss.

Ear mites (Otodectes) are a common cause of ear irritation and frequent ear scratching in cats. Ears infected with mites are often filled with dark brown, flaky debris. The mites can sometimes be seen when the debris is examined under a microscope.

Magnified Ear Mite

Magnified Ear Mite

Cat with Ear Mites

Cat Ear With Mites

Allergies are a common cause of ear irritation in dogs. Allergies can be caused by pollens, molds, plants, fleas, and a variety of other substances. In addition to scratching their ears, dogs with allergies often lick their feet and rub their face.

Trauma to the ear from foreign objects, such as plant seeds or burrs, or from aggressive cleaning with cotton-tipped applicators can also cause pain and inflammation to a pet's ears.

Any of these conditions, if left untreated, can lead to additional and more complicated problems, such as yeast or bacterial infections. These organisms grow best in warm, humid ears that have little air flow. Thus, breeds that have very long or very narrow ear canals, dogs with heavy drooping ears (e.g., cockers), animals that enjoy swimming, and those that live in hot, humid environments will be predisposed to ear infections.

Yeast (Malassezia pachydermatitis), in small amounts, is a normal inhabitant of the ear canal. Inflammation of the ear, from any of the above conditions, allows the yeast to grow in excessive numbers. Yeast-infected ears have a smelly waxy buildup.

Bacterial infections can result in smelly pus-like drainage from the ear and can be extremely painful.

Your veterinarian can examine your pet's ear canals; test a sample of the discharge for bacteria, yeast, or mites and choose the most effective course of treatment. Along with choosing the most effective medication, the treatment must be administered correctly. Your veterinarian can show you the proper way to clean and medicate your pet's ears.

To prevent ear problems, keep your pet's ears clean and dry. It is more important to check your pet's ears regularly for dirt and discharge than it is to clean them. Look in your pet's ears once a week or whenever you are petting him or her. If the ears need cleaning, use only products and methods recommended by your veterinarian. Never clean the ears with a cotton-tipped applicator any deeper than you can see. Pushing the applicator too far down can cause serious internal damage. Finally, if your pet's ears require frequent cleaning, see your veterinarian and treat the cause before complications develop.

For more information on proper ear care, please call our hospital.

Video - Pudgy Pets Pose Problem For Vets

With warmer weather approaching, plenty of pet owners are thinking of getting into shape before hitting the beach. But what about pets? Obesity is a growing problem among both cats and dogs. And much like humans, too many extra pounds can have far-reaching consequences for our animal companions. In this report from the Veterinary News Network, Dr. Jim Humphries discusses the health problems that can occur if your pet is overweight and shares tips on how you can get your pet's weight under control.

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Feline Hip Dysplasia

Hip dysplasia is not just for dogs.

Until very recently, cats were not thought to be affected by hip dysplasia. Well known in many dog breeds as an inherited disorder, cats were thought to be free of the condition. New information and research has shown that this disease does indeed exist in the cat and is likely an inherited disorder.

Hip dysplasia is not caused by one single gene. It is a polygenitic, complex disease, caused by several genes. The disease is not congenital (meaning that an animal is not born with it), but rather develops over a period of time resulting from instability in the ball and socket portion of the hip joint. Abnormal hip joint laxity (looseness between the femoral head - the ball, and the acetabulum - and the socket) is the initiating factor that results in the condition known as hip dysplasia.

The looseness that occurs within the joint contributes to secondary changes. A major change is the deterioration of the articular cartilage (articular cartilage functions as a lubricating mechanism within the joint). The degenerative changes that occur within the joint cause the femoral head and acetabulum (the ball and socket) to rub together and with every step, causes the cat to experience pain. Eventually, as the condition progresses, the cat develops severe degenerative joint disease (osteoarthritis) of the hip.

Symptoms of feline hip dysplasia are somewhat similar to symptoms of canine hip dyspalsia. Severely affected cats have obvious symptoms and experience pain. These cats may appear to be stiff when they walk, walk with a pronounced limp, and may be reluctant to jump or climb. Cats that are moderately affected appear less lame or lame from time to time. In some cases, the symptoms only appear after some traumatic event, such as a fall. Other cats totally mask the symptoms of hip dysplasia and appear normal.

Hip dysplasia is a condition which is present in the general feline population (in the random-bred, general cat population as well as in purebred cats) and is seen in all types of body styles, from relatively small cats like the Siamese to the larger breeds like Persians and Maine Coon Cats.

Maine Coon Cat

In the case of purebred cats, the breeders determine which cats can breed. Current thinking suggests that the greatest impact on reducing feline hip dysplasia can be made by breeders who choose to breed only cats that have been evaluated for the presence of hip dysplasia.

Diagnosis of feline hip dysplasia is made by x-raying the affected cat's hips. There are two different methods for evaluating hips. The most widely used method is that of The Orthopedic Foundation For Animals (OFA). The other method is done in conjunction with the University of Pennsylvania and is called the Penn Hip Improvement Program (PennHIP).

The OFA method is readily available as x-rays are taken by your local veterinarian and then forwarded to the OFA for evaluation. The PennHIP method for felines is currently available only via the University of Pennsylvania. While both utilize radiographs, the methods vary as do the opinions on which method is best.

Selective breeding is the key for reducing the incidence of feline hip dysplasia. Only cats that have sound hips, with no radiographic signs of hip dysplasia, should be used for breeding. Cats with radiographic signs of hip dysplasia should not be used for breeding and should be neutered at the appropriate age.

Through The Eyes Of Your Dog

Owners who want to better understand their canine companions must recognize that dogs see the world from a different visual perspective. The differences begin with the structure of the eye. We have a good idea what dogs see because we know the make-up of the retina of a dog’s eye.

The retina is the light sensitive portion of the eye. This structure is located in the back of the inside of the eyeball. The retina contains two types of light sensitive cells: rods and cones. Cones provide color perception and detailed sight, while rods detect motion and vision in dim light. Dogs have rod-dominated retinas that allow them to see well in the dark. Along with superior night vision, dogs have better motion visibility than humans have. However, because their retinas’ contain only about one-tenth the concentration of cones that humans have, dogs do not see colors as humans do.

Comparison between colors human see and those canines see

Dogs see like a color-blind human. Many people think that a person who is red/green color blind cannot see any color, but there are variations of color blindness. Most people have vision that is trichromatic (three-color variations). People who are red/green color blind are dichromatic (two color variations). Dogs’ retinas can distinguish two colors. These colors are blue-violet and yellow. Dogs can also differentiate between shades of gray. Dogs are unable to recognize green, yellow, orange, and red.

Colors that Humans See

Colors That Humans See

Colors that Dogs See

Colors That Dogs See

Dogs use other cues such as smell, texture, brightness, and position rather than relying solely on color. Seeing-eye dogs, for example, may not distinguish between a green or red stoplight; they look at the brightness and position of the light. This, along with the flow and noise of traffic, tell the dog that it is the right time to cross the street.

How a dog’s eyes are set determines the field of view as well as depth perception. Prey species tend to have eyes located on the sides of their head. This gives the animals an increased field of view and allows them to see approaching predators. Predator species, like humans and dogs, have eyes set close together. Human eyes are set straight forward while dog eyes, depending on the breed, are usually set at a 20 degree angle. This angle increases the field of view and therefore increases the peripheral vision of the dog.

Increased peripheral vision compromises the amount of binocular vision. Binocular vision occurs where the field of view of each eye overlaps. Binocular vision is necessary for depth perception. The wider-set eyes of dogs have less overlap and less binocular vision, thus, less depth perception). Dogs’ depth perception is best when they look straight ahead. This is not an ideal situation, as their nose often interferes. Predators need binocular vision as a survival tool. Binocular vision aids in jumping, leaping, catching, and many other activities fundamental to predators.

The dog’s field of vision is wider than the human’s

In addition to having less binocular vision than humans have, dogs also have less visual acuity. Humans with perfect eyesight are said to have 20/20 vision. This means that we can distinguish letters or objects at a distance of 20 feet. Dogs typically have 20/75 vision. What this means is that they must be 20 feet from an object to see it as well as a human standing 75 feet away. Certain breeds have better visual acuity. Labradors, commonly used as seeing-eye dogs, are bred for better eyesight and may have vision that is closer to 20/20.

If you’re silently standing across the field from your dog, don’t expect him or her to recognize you. He’ll recognize you when you do some sort of motion particular to yourself. He may also recognize your presence by his outstanding sense of smell and/or hearing. Because of the large number of rods in the retina, dogs see moving objects much better than they see stationary objects. Motion sensitivity has been noted as the critical aspect of canine vision. Much of dog behavior deals with posture and appropriateness. Small changes in your body posture mean a lot to your dog. Dog owners need to modify training based on this fact. If you want your dog to perform an action based on a silent cue, we suggest using a wide sweeping hand and arm motion in order to cue your dog.

When dogs go blind, owners often wonder if the dogs’ quality of life has diminished to the point where they are no longer happy. Humans deal well with being blind, and humans are much more dependent on their eyes than are dogs. Blind dogs lead happy lives as long as they are comfortable. The owner may need to make some adjustments in the pet’s environment. Some of these adjustments include fencing the yard, taking leashed walks, and not leaving unusual objects in the dog’s normal pathways. Obviously, most blind dogs cannot navigate stairs very well. When blind dogs are in their normal environment, most people don’t know they are blind.

Most Common Feline Poisonings

Cats are sensitive to many toxic agents, sometimes in ways unique to their species. Although cats are less likely than dogs to expose themselves through "curious" ingestions, cats do have more of a tendency to nibble on deadly agents. Cats are also able to jump to high places and squeeze into small spaces that are out of reach to dogs, children and even adults! Lastly, because of their need to groom, cats with skin exposure to hazardous chemicals are likely to receive an oral dose as well. In this article we describe 10 common household hazards that are dangerous to cats. The products listed below have been selected based on the most frequent feline exposures reported to the ASPCA Animal Poison Control Center (APCC) over the last four years.

1-2. Canine topical treatments and other topical insecticides

Believe it or not, owners often accidentally apply dog flea and tick treatments on their cats. In some cases, cats have even developed signs of poisoning after being in close contact (sleeping near or grooming) with a dog that has recently been treated with a flea/tick topical medication. Initial signs of intoxication may appear within a few hours but can take 24 to 72 hour to show up. Full body tremors are the most common, though seizures may also occur.

Be sure to read instructions when applying

Cats may also have an adverse reaction to topical insecticides specifically designed for cats. In general, topical flea control products applied according to the label directions do not cause problems. If signs such as irritation of the skin or hypersensitivity appear, wash the product off with a mild detergent. If a cat licks the applied product, hyper-salivation, agitation and occasionally vomiting, may develop. The best way to avoid any problems is to read the directions carefully and thoroughly before applying any topical medication or product on your cat.

3. Venlafazine

NOT for kitty!

Venlafaxine (Effexor, Effexor XR-Wyeth) is an antidepressant available in tablets and capsules. Cats seem to be big fans of venlafazine and readily eat capsules containing the drug Although this is not a common household drug it can cause serious illness if ingested. Clinical signs include dilated pupils, vomiting, tachypnea (rapid breathing), tachycardia (rapid heart rate), ataxia, and agitation. Signs generally begin within one to eight hours after ingesting the medication. The prognosis is good with timely treatment and close monitoring.

4. Glow sticks and jewelry

What's inside can be very dangerous

Glow sticks and jewelry are plastic bracelets, necklaces, and wands that contain a liquid that glows in the dark. The jewelry is popular throughout the summer, especially around the Fourth of July and at Halloween. Cats frequently bite into the jewelry, but due to the extremely unpleasant taste of the liquid chemical, they generally don't ingest more than a small amount. Almost immediately after biting into a piece of glow jewelry, a cat exhibits signs of a taste reaction, including hyper salivation, agitation, and, occasionally, vomiting. The behavioral changes are likely due to the cat's reacting to the unpleasant taste. A tasty treat such as milk, liquid from a tuna fish can, or other palatable food can ameliorate the taste reaction. Remove any liquid on the fur with a wet washcloth to prevent re-exposure. Since the liquid is designed to glow in the dark, it is easiest to identify the chemical on the cat in a darkened room.

5. Lilies

Pretty, but not for kitty to eat!

Though beautiful to look at, lilies can pose a threat to cats. While many plants are called lilies, cats can develop acute renal failure after ingesting Easter lilies, Stargazer lilies, Tiger lilies, Asiatic lilies, Oriental lilies and Day lilies. Within two to four hours after ingesting any part of the plant (including the pollen), vomiting and depression can occur. Often the cat seems to recover only to deteriorate rapidly about 24 to 72 hours after the exposure. The symptoms that appear include frequent urination, frequent drinking of water and more severe depression. The prognosis is good with prompt, aggressive treatment.

6. Liquid Potpourri

Smells nice, but not edible!

Who doesn't like a pleasant smelling house? Unfortunately, liquid potpourri, used for just that purpose, is hazardous to cats. Cats, ever the curious species, may lick the product from the container or from their fur if exposed to a spill. The liquid may contain high concentrations of detergents, essential oils or a combination of both. Clinical signs of ingestion include upset stomach, drooling, depression and hypotension. If skin or eye exposure occurs, skin irritation and ulceration along with severe corneal ulceration can occur.

7. NSAIDs - Non-Steroidal Anti-Inflammatory Drugs

They help us, but not our cats

Cats may be exposed to non-steroidal anti-inflammatory drugs (NSAIDs) either by owner administration or, more rarely, by self-ingestion. Although NSAIDs are a group of medications, the most common ones are carprofen (Rimadyl), ibuprofen, deracoxib, naproxen (Aleve), etodolac, meloxicam, and indomethacin. Ingestion of these NSAIDs can cause stomach upset, including vomiting, diarrhea, ulceration, bleeding and ulcer perforation. Acute renal failure, seizures and comas have been associated with higher doses. In general, cats have a low tolerance for NSAIDs. For example, cats are thought to be at least twice as sensitive to ibuprofen as dogs. Because of this sensitivity, most exposures require emergency, aggressive treatment.

8. Acetaminophen

Cures our aches, but causes them in our cats

Acetaminophen, most commonly known as Tylenol, is an over-the-counter medication used to relieve pain and reduce fevers. Most often, owners attempting to help relieve their cat's discomfort, wind up causing harm by administering acetaminophen as a pain reliever. As with NSAIDs, cats should never be given acetaminophen as a pain reliever. Specifically, acetaminophen breaks down into smaller pieces that bind to red blood cells and other tissue cells, resulting in the destruction of these cells. In other words, just one pill can cause significant tissue damage in cats. Signs of intoxication develop quickly and can include salivation, vomiting, weakness, abdominal pain and fluid build up (edema) in the face or paws.

9. Rodenticides (rat poison)

Poisons intended to kill rats, mice, gophers, moles and other pesky mammals are among the most common and deadly of household poisons. Since rodents and cats are all mammals, it makes sense that substances highly poisonous to mice, for example, would be just as lethal to cats. It cannot be stressed enough that rodenticides are highly toxic and any such poisons designed to kill small mammals need to be carefully stored away from curious kitties. Also, since cats can be natural rodent hunters, it would be wise to let nature take its course as opposed to exposing your cat to a deadly toxin.

Not just deadly to rats!

While there are many categories of rodenticides, the most common poisoning seen in veterinary practice is that of the anti-coagulant kind. Anti-coagulant rodenticides have ingredient names like warfarin, fumarin, diphacinone, and bromadiolone. These poisons act by interfering with a cat's ability to utilize vitamin K. Without vitamin K, a cat's blood is unable to clot when necessary, which can ultimately cause severe blood loss, anemia, hemorrhage and death. Generally, clinical signs are not seen until three to five days after the cat has ingested the poison. Symptoms resulting from intoxication are weakness, difficulty breathing, pale mucous membranes, bruising and bleeding from the nose. Other types of rodenticides can cause neurological signs such as incoordination and seizures as well as cardiac failure.

If accidental ingestion of rat poison is suspected, contact your veterinarian immediately, even if your cat is showing no obvious signs of being ill. Be sure, if possible, to bring the poison container to the veterinary hospital in order to determine the specific rodenticide ingested. Early recognition is critical, as some toxicities can be treated successfully if caught early and treated appropriately.

10. Fertilizer

Good for grass, not for kitty

Spring and fall are the times to fertilize. Unfortunately, it is also the time for accidental poisoning. Cats, the perennial groomers, often lick their paws, especially after walking outdoors. Because fertilizers are usually a combination of ingredients, several toxic outcomes are possible. In general, the ingredients are poorly absorbed and most clinical signs are related to gastrointestinal irritation showing up as vomiting, hyper-salivation, diarrhea or fatigue. The best way to avoid illness or injury is to keep your cat inside while treating your lawn and wait a little bit before letting him or her out again.