Thursday, October 4, 2007

Cat sensations

We understand the world around us through our five senses and so do our cats. Using sight, sound, smell, taste, and touch, we observe, learn, navigate, and experience. Your cat's senses evolved from those of the wild cat, a long line of hunters and predators, and are designed for the purpose of stalking, hunting and killing. Almost all of your cat's five senses have heightened ability when compared to humans. So, how do we stack up, sense wise, to our feline companions? A cat's vision is superior at night to ours but inferior in daylight. Cats have a slightly larger field of view than humans. We have a similar range of hearing at low frequencies, but cats can hear much higher-pitched sounds. A cat's sense of smell is about fourteen times better ours. Cat’s tastes are specialized, as a carnivore, preferring meat and fat. They are lacking a gene that allows them to taste, or enjoy sweet - which might help with dieting ;-).

Sight

Cats have excellent night vision. They can distinguish objects well even in a badly lit environment, though they cannot see in total darkness. The cat's retina has two types of cells: one to perceive vertical objects and one to perceive horizontal ones. Cat’s vision is especially well tuned to detecting motion; they can see movements that are too fast for our eyes, yet find it hard to focus on very slow movement. This capability in addition to the night vision makes him a successful noctural hunter.

A unique feature a domestic cat’s eyes are the slit shaped pupils. He can see in the dimmest of lights because his pupils can open about three times as wide as the human pupil. Cats also have an inner eyelid that helps clean and protect the eye. This third eyelid is called the palpebra terria. It is a fold of tissue covered by a specialized mucous membrane. We don't know for sure what kind of colors cats can see, but scientific tests indicate that cats can recognize at least some of the colors that we do.

Sound

Cats have sharp ears, adapted especially for the high sounds. The ears are fairly large relatively to their head and have the ability to move sideways so that sound can be captured more accurately. Cats' ears are uniquely designed to draw sound into the ear canal, which enables them to hear sounds like a mouse rustling in the brush 30 feet away. Cats can rotate their ears up to 180 degrees. They also can detect the tiniest variances in sound, distinguishing differences of as little as one-tenth of a tone. This discrimination capability helps them identify the type and size of the prey emitting the noise or quickly find a mewing kitten.

Smell

Cats rely heavily on their sense of smell. A cat will always sniff its food before eating and scent marks are an essential part of feline communication. A cat’s sense of smell is far better than a human’s, but not quite as good as a dog’s. A cat uses scent to find food, mates, enemies, and to seek out his own territory. Cats also have a unique mechanism at the top of their mouth, which enables them to make a special analysis of air molecules. A pair of organs, called Jacobson's organs, allow the cat to analyze air that is inhaled through the mouth rather than the nose. There are several hypotheses about how the cat uses his Jacobson’s organs including: finding food, helping predict unusual occurrences, e.g., earthquake, and perceiving sexual odors or pheromones.

Taste

Compared to humans, the cat's sense of taste is weak. Where we have 9,000 taste buds, cats have only 473. Therefore, most of a cat’s sense of taste is really his sense of smell. Cats use their sense of taste to determine which foods are good for them. As they are true carnivores, their sense of taste is geared towards identifying protein and fat. Cats are also not very sensitive to the taste of salt or sweet. Food straight from the refrigerator doesn't appeal to a cat; whose wild ancestors ate freshly killed prey. Try heating Kitty's food to intensify the aroma if he is not eating well. SEE THE COMPANION ARTICLE ON FEEDING YOUR CAT

Touch

Like their human companions, cats have touch receptors all over their body. The Sense of Touch is especially keen on the foot pads and at the whiskers. These nerve cells transfer sensations of pressure, temperature and pain from any point to the brain. The most sensitive places on the cat's body are the face and the front paws. The cat's whiskers are the most sensitive of all. The special hairs, called vibrissae, are set deep within the skin and provide the cat with sensory information about the slightest air movement around it - a valuable tool for a nocturnal hunter.

The natural diet of cats is meat

Cats are meat eaters, designed to thrive on a wide variety of small prey animals, eaten fresh and whole. Their natural diet is high in water and protein, with a moderate amount of fat, and a very low percentage of carbohydrate.

Dry cat food is high in grain.

A diet of dry food is high in carbohydrate, between 35 and 50 percent. "Diet" and "Lite" foods have even more.

Dry food contains almost no water. Dry cat food is convenient to feed, and relatively inexpensive, but it's the opposite of the natural diet of cats. Cats have no dietary need for any carbohydrate.

Cats need to get water from their food.

Cats are descended from feline desert dwellers. They couldn't stroll over to the watering hole for a drink, and cat tongues are not very well designed for drinking water.

Cats are adapted to obtain most of their water from their prey, which contains more than 75 percent water. Cats who eat dry food consume only half the water they need, compared to those that eat wet food, and live in a state of chronic dehydration.

The common health problems of cats are related to diet.

There is increasing evidence, published in peer-reviewed veterinary journals, that many of the health problems seen in cats are the result of diets inappropriate for a feline. Dry, grain-based foods fed to a meat eater, over time, result in both chronic and life-threatening diseases, like these:

Obesity: Since cats are designed for a high-protein, moderate-fat, low-carbohydrate diet, it is not surprising that obesity is often seen in cats. Diet cat foods have even more carbohydrate than regular ones, and less fat, so they depart even further from the natural diet of cats, making it harder for them to lose weight.

Diabetes: The high level of carbohydrate in dry cat food contributes directly to the development of diabetes in cats. Blood sugar levels rise when cats eat dry food. When this is an ongoing event, insulin-producing cells "downregulate," which leads to diabetes.

Kidney disease: Kidney disease is the most common cause of death for cats. The kidneys require an abundant supply of water to do their job. Without water to process the byproducts of the digestion process, the kidneys are overloaded, become damaged over time and unable to do their job.

Bladder Problems: Cystitis, bladder irritation and bladder/kidney stone formation are also strongly connected to dehydration. If the body is well hydrated, these problems are minimized.

Inflammatory Bowel Syndrome and Disease: These problems are often characterized by vomiting and diarrhea and are very common in cats. Cats who eat a species-appropriate diet rarely suffer from these issues.

Dental disease: Dry food has a high sugar (carbohydrate) content, which has been shown to cause dental decay.

For cats to derive any supposed abrasive benefit from dry foods to be seen, they would have to actually chew their dry food. Since dry food shatters in their mouths and they then swallow the pieces, there's no abrasive action from chewing something hard.

Cats who eat dry food often have very severe dental problems. Many factors contribute to dental health, but it is clear that a high-carbohydrate diet is not beneficial!

The Solution: An Appropriate Diet for the Species

It's simple: Cats need to eat a diet that is high in protein and water, with a moderate amount of fat, and almost no carbohydrate.

Most of the health problems we've discussed here are either radically improved or eliminated by eating a diet that meets the needs of a carnivore -- one which closely resembles the nutritional balance provided by a mouse. For example, many veterinarians now treat diabetes in cats with a meat-based canned diet.

We'd like to go a step further, and prevent these diseases.

Feed your cat a meat-based diet!

We suggest you buy canned food that is designed to be complete, or complete frozen diets that have very little vegetable content. No grain sources should be listed in the ingredient panel. There are grain-free canned cat foods that have some vegetables in them, but vegetables should not be a major component (read our article on how to compute these percentages).

"All meat" diets are just that, and they will not meet your cat's nutritional needs alone.

Make the switch successful!

It sounds simple to just switch your cat's food. After all, meat tastes better than dry food, but your cat may disagree. Dry foods are designed to be tasty, and many cats are addicted to them. Often, cats are not open to the idea of variety, especially if they have only been fed one food (as we have been advised by pet food companies for decades). Creativity and patience may be needed to switch your cat.

Cats will starve themselves, and they are not good candidates for the tough love approach. Some very serious conditions can occur if cats do not eat for an extended period, especially if they are overweight. A slow switch will prevent problems.

Here are some ideas to help you along:
Establish regular feeding times and put food away in between meals. For many reasons, it's best for their bodies not to have food available all the time. If you have dogs, you know what to do with leftovers! Feed multiple cats separately.
Consider dry food to be a snack only, not left out all the time. Leave out just a few pieces as a treat. Consider this the equivalent of "kitty junk food."
Offer bits of other kinds of fresh food that you are eating. They may be refused, but one day, they won't. Your goal is to get your cat to consider things as food other than dry, crunchy items.
Cat whiskers are very sensitive. If food is served in a bowl that interferes with whiskers, it could be enough to keep the cat from considering the food. A flat dish works well.
Cats generally prefer their food between room temperature and body temperature. The dry food cats are used to eating is designed to be very smelly. Warming the food releases the flavors and fragrances. Cats choose food by smell, and wet food is a lot less fragrant than a commercial food they have been eating. This is often the reason that the second half of a can of food is refused: The first time it was room temperature!
Trickery has been known to work with cats. Put the food on your plate, or hide it in a location cats know to be forbidden. When in doubt, creativity helps!


Additions and Considerations

Add sardines for good fats, or use fish oil. A meal of sardines once a week or one small sardine a day adds omega-3 fatty acids in their best form-- whole food. Because cats can't use plant sources of omega-3s at all, animal sources are necessary. If sardines aren't appealing to you, use a fresh, high-quality omega-3 fish oil supplemented with vitamin E.

Digestive enzymes and a glandular supplement are good additions to replace the parts of prey animals we normally don't feed cats: The stomach contents and smaller glands.

We think that the optimum diet for cats is a raw meat-based diet. However, if you feed your cat a canned diet that approximates the balance of his or her natural diet, their diet will be fully hydrated, and you will be much closer to providing your cat with optimum nutrition.

If you choose to feed a meat-based canned diet, find a way to simulate components lost in cooking or processing.

One way to add live food is with "cat grass," very popular with cats. It's often available in the produce section at the grocery store, or you can grow your own from a kit. This addition often takes the burden off the house plants! Dry "green stuff" is another choice ("Barley Cat" is one product). It takes a very small quantity of a dry product to do the job. Too much can make urine PH too alkaline, and cause some of the problems you're trying to avoid! Tiny pinches of dry green stuff go a long way.

For cats, good diet can make the difference between "Old Age" at 12 and 23. Cats who eat dry food are often old and feel quite ill at 9 or 10. Healthy cats can live a very long time, and that's what we hope for your feline carnivore!

Contact Steve or Beth for more information at bat31@earthlink.net.

Dr. Mercola's Comment:There is indeed a special relationship that exists between pets and their owners that goes far beyond the sharing of a home together. Our happy-go-lucky, four-legged friends also provide us with constant unconditional love, devotion, friendship and something else that might not be at the forefront of most people's minds -- health benefits.

If you have a dog, I highly recommend you read their excellent book, See Spot Live Longer. Using philosophies similar to my own regarding the importance of nutrition, See Spot Live Longer presents solid evidence that a good diet is just as important for dogs as it is for us. When fed a proper raw diet appropriate for their body, hundreds of people, including veterinarians, have witnessed vast health improvements in their dogs.

Authors Steve Brown and Beth Taylor, both pet health and nutrition experts, provide an all-inclusive argument for feeding your dog a naturally balanced raw meat, bone and vegetable-based diet that provides much higher quality nutrition than any dry or canned dog or cat food. By convincingly covering all the bases, readers will:
Review case studies of dogs and cats with chronic illness that improved after fed a healthy diet of fresh food.
Dispel the myths that are sabotaging your dog's health.
Learn how the ancestral dog's diet compares to the modern diet dogs eat today.
Realize the canine anatomical digest process to better understand why and when our animals are at risk from different types of food and potential toxins.
Find out why dry and canned dog foods may be harming your dog.
Find out what real fresh foods will protect your dog from cancer and other disease.
Discover the importance of exercise and how keeping your dog fit will add years to its life.
Learn practical, cost-effective solutions to feeding your dog better for a longer and healthier life.

Friday, September 7, 2007

Cat Health

Cat owners should make sure to visit the veterinarian at least once a year for an annual examination and shots. If a cat becomes sick or injured, it is advisable to visit the veterinarian or animal hospital immediately. Your kitten will need a series of vaccines when it is very young. This series of shots is commonly referred to as a "3 in 1". When your kitten is 2,3 and 4 months of age it will receive a combination vaccine that protects your cat from panleukopenia (also referred to as feline distemper), calicivirus and rhinotracheitis. If your cat has not been vaccinated and is four months or older, it will be necessary to administer a series of two vaccinations 2 to 3 weeks apart, followed up with annual vaccinations.

There are two immune system viruses (retroviruses) that can infect your cat or kitten; Feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV). There is a vaccination available for feline leukemia but not FIV. It is possible that your cat can be infected and show no symptoms for months or years with either of these deadly viruses and the owner should make sure their cats are tested when visiting the veterinarian. Its mother can spread these viruses to a kitten at birth or through a bite of another infected cat. Outdoor and stray cats often carry these infections but neither is transmissible to humans. To ensure that your cat does not become infected with these viruses, it is advisable to keep them indoors. If you do allow your cat to be an outdoor cat, you must vaccinate the animal against the feline leukemia virus. No vaccine is 100% effective but it is an excellent preventative measure to safeguard your cat from ill health.

Aside from FeLV and FIV, there are some other ills that can befall your cuddly companion. Tiny parasites in the form of ear mites are a common problem that is easily transmitted between cats. You may notice your cat scratching its ears or shaking its head, which are two symptoms of ear mites. Take your cat to the vet if this occurs, he or she will clean the ears of your feline friend and administer proper medication. Worms are another problematic medical condition to look out for when caring for your cat or kitten.

Tapeworms and roundworms are common parasites that can infect your companion. Your vet can properly diagnose this nasty bug and prescribe medication to treat your cat. Fleas can transmit tapeworms as well as irritate your cat's skin. Check your cat weekly for fleas and ticks. Fleas are ubiquitous and will be all over your house if found on your cat and flea bombing your living space will be in order in addition to cat-safe flea shampoo or powder. Be sure to treat all domestic animals if you find one flea. Your vet can advise the best treatment program. Male and female cats can develop feline urological syndrome (FUS), which is an infection of the lower urinary tract. As in humans, if your cat is repeatedly visiting the litter box, you see blood in the urine or your cat is making loud cries or straining while urinating you must take your cat to the vet for medication. FUS is more common in male cats and this infection can be fatal if your cat does not receive rapid treatment.