African dwarf frogs live their entire lives underwater but need to rise to the surface to breathe air because they have lungs and not gills.
These frogs have tiny black claws on their hind legs, which caused one of their discoverers, Oskar Boettger, to originally call them African dwarf clawed frogs,[REF] but they quickly lose these black tips in the sharp pebble environments and are more commonly called African dwarf frogs today.