By Brittany Groves,Elm Street School The Koala Bear is a warm-blooded mammal. ... The Koala has big ears and a big nose. They have very sharp teeth and […] Sign in or Subscribe See Offers. Sign In: ...

Teeth from the animal were found at the Pwerte Marnte Marnte fossil bed 100 kilometres south of Alice Springs, thought to be 25 million years old, making it one of the oldest known koala relatives.