Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A dork is a whale's penis.
327
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6