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Cats have minimal ability to sweat, with glands located English 9 midterm study guide 2014 in their paw pads,  and pant for heat relief only at very high temperatures  but may also pant when stressed.
A cat's body temperature does not vary throughout the day; this is part of cats' general lack of circadian rhythms and may reflect their tendency to be active both during the day and at night.
However, some of these products still fail to provide all the nutrients cats require,  and diets containing no animal products pose the risk of causing severe nutritional deficiencies. A proposed explanation is that cats use grass as a source of folic acid.
Another is that it is used to supply dietary fiberhelping the cat defecate more easily and expel parasites and other harmful material through feces and vomit.
Arginine is essential in the urea cycle in order to convert the toxic component ammonia into urea that can then be excreted in the urine. Because of its essential role, deficiency in arginine results in a buildup of toxic ammonia and leads to hyperammonemia.
The quick onset of these symptoms is due to the fact that diets devoid in arginine will typically still contain all of the other amino acidswhich will continue to be catabolized by the body, producing mass amounts of ammonia that very quickly build up with no way of being excreted.
Another unusual feature is that the cat cannot produce taurine[note 1] with a deficiency in this nutrient causing macular degenerationwherein the cat's retina slowly breaks down, causing irreversible blindness. However, cats have a high activity of picolinic acid carboxylase, which converts one of the intermediates to picolinic acid instead of quinolinic acid.
Vitamin A is considered to be a fat-soluble vitamin and is seen as essential in a cat's diet. Normally, the conversion of beta-carotenes into vitamin A occurs in the intestine more specifically the mucosal layer of species, however cats lack the ability to undergo this process.
Most mammals can convert linoleic acid to arachidonic acidas well as the omega 3 fatty acids eicosapentaenoic acid and docosahexaenoic acid through the activity of enzymes, but this process is very limited in cats. Deficiency of arachidonic acid in cats is related to problems in growth, can cause injury and inflammation to skin e.
Cat senses Reflection of camera flash from the tapetum lucidum Cats have excellent night vision and can see at only one-sixth the light level required for human vision.
Unlike some big cats, such as tigers, domestic cats have slit pupils. However, this appears to be an adaptation to low light levels rather than representing true trichromatic vision. It allows them to sense certain aromas in a way that humans cannot. To aid with navigation and sensation, cats have dozens of movable whiskers vibrissae over their body, especially their faces.
These provide information on the width of gaps and on the location of objects in the dark, both by touching objects directly and by sensing air currents; they also trigger protective blink reflexes to protect the eyes from damage.
In the wild, a higher place may serve as a concealed site from which to hunt; domestic cats may strike prey by pouncing from a perch such as a tree branch, as does a leopard. During a fall from a high place, a cat can reflexively twist its body and right itself using its acute sense of balance and flexibility.
An individual cat always rights itself in the same way, provided it has the time to do so, during a fall. Cats without a tail e. A cat falling from heights of up to 3 meters can right itself and land on its paws.
Cat health and Aging in cats The average lifespan of pet cats has risen in recent years.
In the early s, it was about seven years, : Feline diseases A wide range of health problems may affect cats, including infectious diseases, parasites, injuries, and chronic disease.
Vaccinations are available for many of these diseases, and domestic cats are regularly given treatments to eliminate parasites such as worms and fleas. Cat genetics The domesticated cat and its closest wild ancestor are both diploid organisms that possess 38 chromosomes  and roughly 20, genes.
The daily duration of sleep varies, usually between 12 and 16 hours, with 13 and 14 being the average.
Some cats can sleep as much as 20 hours. The term " cat nap " for a short rest refers to the cat's tendency to fall asleep lightly for a brief period.Test and improve your knowledge of 9th Grade English: High School with fun multiple choice exams you can take online with caninariojana.com Learn midterm study guide english 9 with free interactive flashcards.
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