When cats are happy, they may squeeze their eyes shut.
10
Whales and dolphins can't taste anything other than salt.
11
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
Cats recognise the voice of their owner, but never evolved to care.
22
Two dogs were among the Titanic survivors.
262
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Tigers can see 6 times better at night than humans.
305