Condoms were originally made of animal intestines or linen.
347
The octopus does not have a blind spot.
273
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The colossal squid has the largest eyes in the world.
4
In 1949, an official boxing match between a bear and a man was held. The bear won.
41