Frogs in New Zealand
It is most common to see introduced species of frogs in New Zealand, and very rare to see endemic frogs. Frogs that are native to New Zealand are among the world’s most ancient. Their ancestors were carried by continental drift from the supercontinent of Gondwana millions of years ago. In a family of their own (Leiopelmatidae), they differ from most other frogs in many respects:
- They have no eardrums.
- They have no vocal sac and do not call or croak, although they make quiet squeaks when disturbed.
- They catch insects with their mouth, not with a long tongue.
- They lay small numbers of large yolky eggs in moist places, but not in water.
- Tadpoles grow inside the egg and hatch as tailed froglets – there is no free-swimming tadpole stage. (Te Ara)