surinam toad

US /ˈsʊrɪnæm ˌtoʊd/
UK /ˈsʊrɪnæm ˌtoʊd/
"surinam toad" picture
1.

a species of frog native to South America, known for its extremely flattened body and unique reproductive method where eggs are embedded in the female's back

:
The Surinam toad has a very unusual appearance, almost like a pancake.
Female Surinam toads carry their eggs embedded in their back skin until they hatch.