Tropical tree frog can churn up a foam nest for its young ones.

As the eggs are laid, the slime surrounding them is whipped up

into a thick froth by the hind legs of the frogs.

Some frogs even stick leaves to the outside of these foam nests.

The inner part of the foam forms a protected little pond for the developing tadpoles.

The developing tadpoles drop down from the nest and

complete their development in the water of the pond.

It normally grows to a length of 8 inches.