Sloths take two weeks to digest their food.
243
Only 3% of bird species have penises.
0
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45