Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Cows can sleep standing up, but they can only dream lying down.
745
The elephant brain weighs about 6,000g.
274
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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
Two dogs were among the Titanic survivors.
262