Free lunch

Siberian tiger (Panthera tigris altaica) eats at Tiergarten Schönbrunn, Vienna, Austria. I took this picture in a rather dark environment without flash with a high ISO setting, so if there is a little digital noise, forgive me, please. Nonetheless, I like this picture, because tigers appear to have impeccable "table manners", just like my little ones.

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. Source: wwf.panda.org/what_we_do/endan…

How much food does a tiger need?
An adult tiger needs about 3000 kg of food per year (equivalent to more than 8 kg or almost 18 lbs per day). This translates roughly into one deer-sized animal every week. A large deer like the Sambar is by far the tiger’s preferred prey. The meat from an adult sambar can provide a tiger with enough food for several days. A tiger will return to feed on a large kill again and again until virtually nothing is left. Source www.truthabouttigers.org/home/…
A tiger can consume up to 40 kg (= 88 lbs) of meat at one time, but individuals in zoos are given 5-6 kg (= 11-13 lbs) per day. Source: wwf.panda.org/what_we_do/endan…

Assuming that only the best (e.g. Filet Mignon) is good enough for these kitties, the annual food bill will be roughly $22 per pound x 12 lbs x 365 days = $ 96,360. This is roughly twice as much as the median US household income. Food for thought...?