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 brain weighs about 6,000g.
274
Sheep, goats, octopuses, and toads have rectangular pupils.
7
A 42-foot sperm whale has about 7 tons of oil in it.
209
Gorillas can catch human colds and other illnesses.
205
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212