Gorillas can catch human colds and other illnesses.
205
Cats and dogs can hear ultrasound.
350
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Denmark has twice as many pigs as there are people.
66
Sharks, like other fish, have their reproductive organs in their chests.
248
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57