Cat !

The most popular Pet is Cat. Cat has amazing abilities of living, hunting and survival skills. Cats have a mirror-like membrane in the backs of their eyes, that lets them hunt and in complete darkness.Cats have amazing flexible body, sharp retractable claws, and teeth with K9 built to kill his small prey. As a Hunter of Darkness, cats use their accurate hearing and ability to see in near darkness to locate his small prey.Cats have a rapid breeding rate. The female cat reaches sexual maturity at almost six to ten months. A cat will be pregnant approximately sixty or sixty five days after the conception of delivery. A natural behavior in cats is to periodically hook their front claws into selected surfaces and pull backwards.They use to make these kinds of marks to show their territory and also to relax their legs. Cats use their tongue to clean themselves and where their tongue is not reachable they use their front leg. Cats usually play with their prey after hunting and before eating it is in nature of  it's hunting. Cats are purely domestic and social animals they are extremely adoptable and are almost found in every continent except Antarctica. There are also some relative species of the domestic Cats. Cats hearing ability is strongly sensitive then humans. The cats body is absolutely amazing, it has more bones (Flexible) then a human body The cat's tail is used to maintain balance. cat's-eye gemstone that displays a thin band of reflected light on its surface when cut as a cabochon. Its name is derived from its supposed resemblance to the eye of a cat. Cats are sometimes described as the perfect carnivore because their whole being is designed for hunting and eating animal flesh. From their claws and teeth to their digestive systems, in fact the cat is one of the few animals that have to have some nutrients that traditionally could only be found in meat (although this can now be synthetically reproduced in some cat food).

From a very early age kittens are taught by their mothers that mice and birds etc are good to eat.

She will bring them to her kittens alive and dead to play with and to eat. Eventually they will watch her and catch prey and will learn the techniques themselves.

There is no way for us to prevent this, even if kittens lose their mother they still have a natural instinct to chase and catch fast moving small items.

Cats is a predator but in case they are also seemed to eat grass for the purpose of  their stomach problems such as digesting system.