Wednesday 21 November 2012

Beautiful Cat Wallpapers

Source(google.com.pk)
Beautiful Cat Wallpapers Biography
Cats, like dogs, are digitigrades. They walk directly on their toes, with the bones of their feet making up the lower part of the visible leg.[54] Cats are capable of walking very precisely, because like all felines they directly register; that is, they place each hind paw (almost) directly in the print of the corresponding forepaw, minimizing noise and visible tracks. This also provides sure footing for their hind paws when they navigate rough terrain. Unlike most mammals, when cats walk, they use a "pacing" gait; that is, they move the two legs on one side of the body before the legs on the other side. This trait is shared with camels and giraffes. As a walk speeds up into a trot, a cat's gait will change to be a "diagonal" gait, similar to that of most other mammals (and many other land animals, such as lizards): the diagonally opposite hind and forelegs will move simultaneously.[55]
Like almost all members of the Felidae family, cats have protractable and retractable claws.[56] In their normal, relaxed position the claws are sheathed with the skin and fur around the paw's toe pads. This keeps the claws sharp by preventing wear from contact with the ground and allows the silent stalking of prey. The claws on the forefeet are typically sharper than those on the hind feet.[57] Cats can voluntarily extend their claws on one or more paws. They may extend their claws in hunting or self-defense, climbing, kneading, or for extra traction on soft surfaces. Most cats have five claws on their front paws, and four on their rear paws.[58] The fifth front claw (the dewclaw) is proximal to the other claws. More proximally, there is a protrusion which appears to be a sixth "finger". This special feature of the front paws, on the inside of the wrists, is the carpal pad, also found on the paws of big cats and of dogs. It has no function in normal walking, but is thought to be an anti-skidding device used while jumping. Some breeds of cats are prone to polydactyly (extra toes and claws).[58] These are particularly common along the northeast coast of North America.[59]Cats are obligate carnivores: Their physiology has evolved to efficiently process meat, and they have difficulty digesting plant matter.[35] In contrast to omnivores such as rats, which only require about 4% protein in their diet, about 20% of a cat's diet must be protein.[35] Cats are unusually dependent on a constant supply of the amino acid arginine, and a diet lacking arginine causes marked weight loss and can be rapidly fatal.[66] Another unusual feature is that the cat also cannot produce the amino acid taurine, with taurine deficiency causing macular degeneration, wherein the cat's retina slowly degenerates, causing irreversible blindness.[35] Since cats tend to eat all of their prey, they obtain minerals by digesting animal bones, and a diet composed only of meat may cause calcium deficiency.[35]
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers
Beautiful Cat Wallpapers

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