There are some animals that have been around for a long period of time and there are also some animals that have evolved from other animals. The kangaroo is an animal considered to have evolved from the Tasmanian Devil and also the marsupial moles that can be found in some of the deserts of Australia.
There are also some who say that kangaroos may have also evolved from Australian rats because unlike the typical rat, they also hop in order to get from one place to another. It is very likely that somewhere along the way, the kangaroo was formed. This is one creature that is considered to be a symbol of Australia.