All About Cat

The cat (Felis catus), also known as the domestic cat or house cat to distinguish it from other felines, is a small carnivorous species of crepuscular mammal that is valued by humans for its companionship and its ability to hunt vermin, snakes and scorpions. It has been associated with humans for at least 9,500 years.

A skilled predator, the cat is known to hunt over 1,000 species for food. It can be trained to obey simple commands. Individual cats have also been known to learn on their own to manipulate simple mechanisms, such as doorknobs. Cats use a variety of vocalizations and types of body language for communication, including meowing, purring, hissing, growling, squeaking, chirping, clicking, and grunting.With 69 million of them present in American homes,cats are the most or the second most popular pets in that country. Cats also may be the most popular pet in the world, with over 600 million in homes all over the world.They are also bred and shown as registered pedigree pets. This hobby is known as the "Cat Fancy".
Until recently the cat was commonly believed to have been domesticated in ancient Egypt, where it was a cult animal.However a 2007 study found that all house cats are probably descended from a group of as few as five self-domesticating African Wildcats Felis silvestris lybica circa 8000 BC, in the Near East
Cats are classified as obligate carnivores, because their physiology is geared toward efficient processing of meat, and lacks efficient processes for digesting plant matter. The cat cannot produce its own taurine (an essential organic acid) in its own body and as it is contained in flesh, the cat must eat flesh to survive (see Taurine and cats). Similarly as with its teeth, a cat's digestive tract has become specialized over time to suit meat eating, having shortened in length only to those segments of intestine best able to break down proteins and fats from animal flesh.[24] The trait severely limits the cat's ability properly to digest, metabolize, and absorb plant-derived nutrients, as well as certain fatty acids. For example, taurine is scarce in plants but abundant in meats. It is a key amino sulfonic acid for eye health in cats. Taurine deficiency can cause a condition called macular degeneration wherein the cat's retina slowly degenerates, eventually causing irreversible blindness.
A cat eating a house mouseDespite the cat's meat-oriented physiology, it is still quite common for a cat to supplement its carnivorous diet with small amounts of grass, leaves, shrubs, houseplants, or other plant matter. One theory suggests this behavior helps cats regurgitate if their digestion is upset; another is that it introduces fiber or trace minerals into the diet. In this context, caution is recommended for cat owners because some houseplants are harmful to cats. For example, the leaves of the Easter Lily can cause permanent and life-threatening kidney damage to cats, and Philodendron are also poisonous to cats. The Cat Fanciers' Association has a full list of plants harmful to cats.
There are several vegetarian or vegan commercially-available cat foods supplemented with chemically-synthesized taurine and other added nutrients that attempt to address nutritional shortfalls.
Cats can be selective eaters (which may be due in some way to the aforementioned mutation which caused their species to lose sugar-tasting ability). Unlike most mammals, cats can voluntarily starve themselves indefinitely despite being presented with palatable food, even a food which they had previously readily consumed.
Some cats have a fondness for catnip, which is sensed by their olfactory systems. While they generally do not consume it, they will often roll in it, paw at it, and occasionally chew on it.
Interaction with humans
Human attitudes toward cats vary widely. Some people keep cats for casual companionship as pets. Others go to great lengths to pamper their cats, sometimes treating them as if they were children. Cats are also bred and shown as registered pedigree pets, in a hobby known as the cat fancy.
Because of their small size, domesticated house cats pose almost no danger to adult humans — the main hazard is the possibility of infection (e.g., cat scratch disease, or, rarely, rabies) from a cat bite or scratch. Cats can also potentially inflict severe scratches or puncture an eye, though this is quite rare (although dogs have been known to be blinded by cats in fights, where the cat specifically and accurately targeted the eyes of the larger animal).
Trainability
Some owners seek to train their cat in performing tricks commonly exhibited by dogs, such as jumping, though this is rare. Individual cats have been known to learn to manipulate simple mechanisms, like sink faucets, by themselves or after prompting/encouraging. With effort and patience on the part of an owner, the average cat can usually be trained to at least obey simple commands such as "get off the furniture" or "come to dinner". In general though, the seeming intractability of the ordinary house cat to training has long inspired the simile "like herding cats", as a general expression to describe any situation with a stubborn or uncooperative learner.
Cat play and toys
Cat play and toys incorporates predatory games of "play aggression". These activities allow kittens and younger cats to grow and acquire cognitive and motor skills, and to socialize with other cats. Cat play behavior can be either solitary (with toys or other objects) or social (with animals and people).

Nature of play
Predation
Since cats are meat-eating predators, nearly all cat games are predatory games
PredationPrey is fearful of predators. Predators often encounter prey that attempt to escape predation. Prey that moves towards the cat with confidence may be exhibiting an aggressive defensive posture. Cats may play more with toys that behave more like prey that acts in fear and tries to escape than toys that mimic a more confrontational prey.
Most cat games mimic a specific type of hunting;for example, balls, fingers, sticks, and Laser pointers emulate bugs, while rope or string may emulate a snake. One exception is catnip; catnip is a mood altering substance that provides a euphoric high and is not considered a toy.
Success rate
Success rate is important in play. A cat that catches its prey every time soon gets bored, and a cat that never gets it just loses interest. The ideal hunting success rate is around 1 in 3 to 1 in 6. Capturing prey at this rate generally maximises a cat's interest in the game.
Precautions
Play is about predation, and a highly excited cat can cause minor injuries in the excitement of the moment. With most cats, it is wise to keep playthings at least 8" away from fingers.
Food
Catching and eating are two closely related but separate activities. Domestic cats often store caught food for eating later. Eating happens when the game is over, so incorporating food into hunting games tends to end the interest in play.