Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
A lion in the wild usually makes no more than twenty kills a year.
186
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23