Kangaroos are herbivores meaning they consume only a plant-based diet. They do not eat meat in any form, unless you consider insects meat. A typical kangaroo diet would consist of a variety of grasses, flowers, leaves, and moss.
Similarly to cows, a kangaroo will regurgitate its food and re-chew it before the digestion process begins. Baby kangaroos, called Joeys nurse milk from their mothers until they are around one year to eighteen months old. This nursing happens even if they've left their mother's pouch.