The elephant brain weighs about 6,000g.
274
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The octopus does not have a blind spot.
273