Next time, I'll tell you who the footsteps belonged to, and how Alice got so big she filled a whole house, and what happened when she kicked poor Bill the lizard up and out of the chimney.
Dr Full and his colleagues have since identified similar behaviour in other animals with hooklike toes that are good at escaping pursuit: geckos, for example.
A Russian experiment to study the sex lives of Geckoes in space has run into trouble after the satellite carrying the creatures suffered a malfunction.
This ability to vocalize likely arose independently, multiple times, hundreds of millions of years ago-in frogs, mammals, geckos, and birds and crocodilians.