Cats recognise the voice of their owner, but never evolved to care.
22
Alligators can live up to 100 years.
337
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16