The Motorbike Frog

This little creature visited us the other day.

It is absolutely tiny.

You can see its size in relation to a 230mm (9 inch) long brick in the following picture.

 

I did not know what kind of frog it was, and after consulting a Perth online forum, I found that it is a very common frog (of course) and known as the motorbike frog.

 To know why it is called by that name, you need to listen to the following sound file of its call, which has often been described to be like a motorbike changing gears and revving.  (Sound file from the web, not my recording.)

Update:  Some people has trouble playing the sound file, so here's a link to a YouTube video instead.