In the criminal law in the United States, the definition of a given offense generally includes up to three kinds of elements: the actus reus, or guilty conduct; the mens rea, or guilty mental state; and the attendant (sometimes external) circumstances.
Zebras are herbivores and eat mostly different types of grass, but they also eat bark, herbs and shrubs. Zebras prefer full green grass that is short and near the ground.
(Adrian Bailey). Zebras are a keystone species in the Kalahari; they are a source of food both for predators such as lions and for scavengers such as brown hyenas and whitebacked vultures. Shown here are birds surveying an injured animal on the Makgadikgadi grasslands.