Kangaroos are herbivores, and they eat a wide variety of plants, including grasses, shrubs, tree leaves and shoots. Ecologically, kangaroos are Australia's equivalent of bison, deer and cattle in North America.

Kangaroos get much of the moisture they need from their diet, which means they can go for long periods of time without drinking water.

Like cows, kangaroos have chambered stomachs to help with digestion.They regurgitate grass and shrubs and chew them again before swallowing.They also have highly specialized teeth. Their molars fall out regularly from the wear and tear of their plant-based diet, and are replaced.