One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The seahorse is the only fish to have a neck.
12
The oldest recorded elephant lived for 82 years.
213
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Jellyfish as a species are actually older than dinosaurs and sharks.
383