Vampire Bats Feed Only on Blood

During feeding season the largest animal on Earth relies on tiny shrimp-like krill.

A panda can eat roughly 12 to 38 kilograms of bamboo a day, since the plant provides little nutrition.

The leaves are toxic and low in energy, so koalas sleep up to 20 hours a day to conserve energy.

Large studies have tied a diet rich in olive oil, vegetables, fish and whole grains to fewer heart attacks and strokes.