In the north of South America lives Surinam toad. Nature carefully treated to preserve its offspring. On the back of a toad is Bag incubator - a small depression, the closed fold of skin. Male carefully pushes each egg laid by the females in the bag incubator. The female wears eggs for themselves, protecting them from accidental loss or attack.

Small tadpoles continue to live in her mother's incubator until turn into frogs.