You've heard of them, you've eaten them, but you've probably never seen them whole. And there's a very, very good reason for that!
Hey! A little help here! Add your own funny animal.
The aquatic scrotum, the scientific name for a frog which generally resides in Lake Titicaca, is a large, wrinkly frog, with layers of skin that it uses to breathe. They're considered to be good luck because they supposedly bring rain, and are honored, hugged, kissed and stroked until the rain comes, when they are released back into their natural habitat. See also Sophomoric.
Preferably a scrappy little scamp who could be called Rags and a red-faced butcher running after him with an apron and big red cheeks looking like he's about to pop an embolism. See also Old-Timey, Pets.