Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cats recognise the voice of their owner, but never evolved to care.
22
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Sharks, like other fish, have their reproductive organs in their chests.
248
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
In Australia, there are spiders big enough to eat snakes.
20