South American Bird Poop Frog?

[Deku]

I just saw some "bird poop frogs" at my local petstore for the first time. They are pretty wild looking. Sorry I don't have any care advice to offer, but I want to hear all about it if you get some.

When I read this I kinda thought this was a joke. xD I look into this there is a frog actually called Bird poop. So why is it called that? xD