Classroom lesson Β· Wildlife Β· πŸ‡ΈπŸ‡· Suriname

Suriname Toad

The extraordinary toad that carries its babies on its back

Photo Β· Wikimedia Commons

What is it?

The Suriname toad is one of the most unusual animals on Earth. Instead of laying eggs in water like most frogs and toads, the female Suriname toad carries her eggs embedded in the soft skin of her back. The eggs sink into little pockets, and the baby toads develop completely inside those pockets β€” then push their way out as fully formed tiny toads, not tadpoles!

Tell me more

The Suriname toad is flat β€” really flat β€” almost like someone sat on it. It has no tongue and no teeth, which makes it different from most other toads. Instead it uses its star-shaped, super-sensitive fingertips to feel for small fish and worms in murky water. It then scoops its prey straight into its mouth with its front feet.

The way it raises babies is what makes it truly extraordinary. The male presses eggs into the female's soft back during a remarkable underwater somersault. The skin grows over the eggs, forming individual pockets β€” like a living honeycomb. The embryos develop through the tadpole stage inside those pockets and hatch out as fully formed tiny toads about 3 to 4 months later.

When the babies emerge, they push through the skin one by one β€” each one a perfect tiny toad immediately ready to swim and hunt. After all the babies have left, the mother sheds the used layer of skin and it grows back fresh. Scientists find this animal remarkable because it shows how many unusual ways life can find to raise young.

In the classroom

Walk your class through this in 15 minutes.

Talk together

Discussion prompts

  1. 01The Suriname toad has a very different way of raising babies from most animals you know. Can you think of other animals that carry their young in unusual ways?
  2. 02This toad has no tongue. How might that change how it hunts compared to a toad with a tongue?
  3. 03Scientists are surprised by how many different ways animals raise their young. Why might many different methods have evolved rather than just one?
Try this

Classroom activity

Design your own amazing toad! Give it one special feature for finding food, one for moving around, and one for looking after its eggs. Draw it carefully and write a 'nature guide' entry of three sentences describing how it lives.