Which frog is Most Round?
No question, members of the genus Breviceps. They are basically balls of pure muscle. Which species is more challenging. Contenders include
Breviceps mossambicus
B. gibbosus
B. fuscus
and
B. verrucosus
All extremely round.
Note 1: I do not include some of the other Breviceps here, like B. macrops, because they have more distinct heads and larger eyes that break up the roundness.
Note 2: I am defining roundness here as being as near to spherical as possible, not just a circle. If we were going just circular/disclike, there would be many other possible contenders, and Glyphoglossus molossus would be a very possible winner.
All images from iNaturalist, CC-BY-NC [1,2,3,4]









