Doorknocker - Frog
The green tree frog squeaks when it is touched. The green tree frog is known as the most recognizable frog in Australia. This is because of how the frog looks like and because of its behavior in its habitat. It is also a popular exotic pet throughout the world.
The green tree frog can live up to sixteen years, if kept captive. But some have been known to live for over twenty years.