Because koalas eat nothing but eucalyptus leaves.
Koalas are considered to be arboreal because they spend almost all of their time in eucalyptus trees.
A koala on a eucalyptus tree does not affect the oxygen.
Koala, koala, please come down from the tree.
Koalas mainly inhabit eucalyptus trees (gum trees) in Australia, but they have also been known to spend time in other native trees, such as melaleuca, callistemon and wattle trees.
It is rare, but not impossible, that one could touch a koala in the wild. Koalas spend most of their time in trees, but they will come down to move between trees even when there are people around. On a personal note, I have been within arm's reach of one while walking in the bush. On another occasion, a koala attempted to descend a tree while I was supervising a group of schoolchildren underneath the tree. As with all wild animals, it is best to avoid touching a wild koala, even when it is in close proximity.
they swing from tree to tree like a retard
Swimming is a basic instinct for most animals, and koalas are no exception. Koalas do not spend all of their time in one tree. They have a range of "home trees" which they move between by walking on the ground. A koala may have to cross a creek to get to some of its home trees. Also, given that Australia is flat and flood-prone, there would be times when a koala could be caught in floodwaters.
A small Australian animal that lives in eucalyptus trees is a koala. Koalas are herbivorous marsupials known for their distinctive appearance and diet of eucalyptus leaves. They spend most of their time sleeping in tree branches and are native to Australia.
An Aussie tree hugger could simply be called an environmentalist or a conservationist.
It's the tree that a koala lives in and the koala eats it's leaves.
A koala
Koala Bears stay in the trees, to avoid predators. They jump from tree to tree, using their claws as grips. The koala is also able to run on the ground if necessary.