Questions About Stallions

[DingoJay]

Various rodents flare.  One that I'm personally familiar with is the Guinea Pig aka Cavy.  In addition to the flare, they have two short filaments in the middle of it.  Since I last had them slightly over fifty years ago, I have no pictures.

[threelegs]

Don't know if you'd call it a flare, but the fossa has a largish cup-shaped end on its penis. Looks a little like a toilet plunger, only not so wide.