Condoms were originally made of animal intestines or linen.
347
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Whales and dolphins can't taste anything other than salt.
11
Cats recognise the voice of their owner, but never evolved to care.
22
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Only 3% of bird species have penises.
0