Another common frog here is the Stoney Creek Frog. Although they are strictly speaking a Tree Frog, they have less ability to climb than most other Tree Frogs and are mostly seen on or near the ground.
Many stories I have read about the Daintree talk of a mysterious creature that makes a maniacal laughing noise in the forest. I too was puzzled by this until many years ago I actually observed this frog as the culprit!
They are also capable of a noise rather like a baby crying, usually made when a predator has got them.
When their legs are extended they reveal quite beatiful colours inside, which some refrence books claim are used in mating rituals. Apparently the males repeatedly extend the legs at this time.