They also have the European Hare's habit of hiding in tufts of grass. There are five known species of hare-wallabies. Hare-wallabies mostly prefer tropical plains and grassland. These wallabies are so named because of the horny spur they have at the end of their tails. There are three species of nail-tail wallabies.
Rock wallabies are a large group of quite different-looking species.
As their name implies, they prefer rocky regions. They are found throughout Australia. Because they prefer rocky gorges, cliffs and boulder jumbles, populations may be confined to widely separated and small areas. Competition with feral goats is a problem for rock wallabies in many areas, and we believe foxes have reduced the numbers of some rock wallaby species. It is unique among all marsupials in that it can continue to produce more than the normal four molar teeth.