Cats recognise the voice of their owner, but never evolved to care.
22
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Gorillas can catch human colds and other illnesses.
205
Bats sleep 18-20 hours per day.
5
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2