Rabbits, hares, and pikas are small to medium-sized mammals that are native to all parts of the world except Australia, Antarctica, most oceanic islands, and southern South America. However, humans have introduced rabbits to almost all of the areas where they were not previously found. There are about 80 species in this group divided into two families: the rabbits and hares, and the pikas.
Rabbits, hares, and pikas are all herbivorous. They have large incisors that grow throughout the life of the animal, allowing them to gnaw on hard, plant materials. They live in many kinds of habitats, from tropical regions to arctic tundra, and are exclusively terrestrial.