The dietary habits of the animal
Tigers are at the top of the food chain. They mainly eat large mammals, such as pigs, deer, antelope, buffalo, and gaur. Their preferred and essential food is ungulates hoofed animals such as deer and wild pigs.
Smaller mammals and birds are occasional prey. Tigers have also been known to eat crocodiles, fish, birds, reptiles, and even other predators like leopards and bears.
After eating its fill, the tiger may cover the remains with grass or debris and then return for additional meals over the next several days.
A tiger can consume up to 40 kg of meat at one time, but individuals in zoos are given 5-6 kg per day (Source: http://www.seaworld.org/infobooks/Tiger/diettiger.html)