When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The elephant brain weighs about 6,000g.
274
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Cats and dogs can hear ultrasound.
350
The Basenji dog is the only dog that is not able to bark.
4
Dogs sometimes fake being sick to get attention.
26