We are talking about kangaroos, and Zep, since he lives in Australia, knows about them.
Do you need to buy that license or what?
Oh, and btw.: Sharks also have 2 Penises, because 1 can easiely brake when having sex.
Some animals are far more advanced than we 
Sharks, rays, reptiles as well, oddly enough.
There's actually an endangered species of shark, I forget the name, that has two uterii. Several embryos develop in each, but one inevedibly eats all the others. The two victorious pups survive until birth by consuming the eggs that the mother drops into the wombs.