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Cats, also referred as Felis catus, house cats and domestic cats are small, cute carnivorous mammals. For cat lovers around the world, who wish to know more about these adorable pets, below is a physiology of cats. To start with, studies reveal that around 69 billion of cats are present in the U.S. homes.

They are the second most favored pets after dogs. They can be interbred and have to be registered as pedigree pets. Human beings value cats very much for their superior companionship and capabilities to hunt rodents.

Researchers suggest that association of cats with human dates back some 9500 years ago. They believed that ancient Egyptians were first to domesticate cats, as they considered cats as religious animals. However, recent study shows that, people in other continents also domesticated cats around the same time.

Cats are expert predators and can hunt more than 1000 types of species. However, cats are easily teachable to obey commands. Some cats learn without training such as they can bolt the lock and work on simple mechanisms.

Their vocalizations vary and they use different body languages to communicate. The common vocalizations include meowing, hissing, grunting and growling.

Size And Skeleton Of Cats:

An adult domestic cat weighs about 4.5 -6.8 kilograms. Female feline weighs anywhere between 6 - 10 pounds, about 2.7 - 4.8 kilograms. The height of the cat is about 8 to 10 inches, which means they are around 20-25 centimeters in height.

The length of cat from its nose tip to the tail base averages between 18- 20 inches (46-51 centimeters) long. The size of the cats also depends on their skeleton size. The skeleton of the cat is very prominent. Their spines (backbone) have more bones because it supports the tail.

Their vertebral columns are not rigid as in human being. However, they are extremely flexible. This peculiar feature of flexibility helps them to bend their backs, twist, and twirl their bodies, so that they can squeeze through minimum gaps.

Secondly, a cat does not possess collarbone (Clavicle). If it had a collarbone, then it may not have been able to slip away through the narrow spaces. The skeleton of the cat is symmetrical and starts from the head region to entire body. The general structure of the cat's skeleton includes of three subunits.

The first skeletal subunit includes appendicular skeleton, which contains bones of fore limbs and hind limbs. The second subunit includes axial skeleton, which contains cranium, ribs, spine, and sternum. Third skeletal subunit is the visceral skeleton, which constitutes parts of other bodily organs such as ossicles (middle ear) and paws.

Functions Of Cat's Skeleton:

Cat's skeleton mainly carries out four functions. First, it supports and shields the body. Secondly, the bones work as levers to execute the muscular action. The skeleton also functions as the storehouse for phosphorous, calcium and other vital elements.

Lastly, cat's skeleton also serves as storage space for RBC (red blood cell), WBC (white blood cells) and fats.