Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
A cow produces around 200,000 glasses of milk in her lifetime.
373
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
Condoms were originally made of animal intestines or linen.
347
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132