Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Parrot parents "name" their children with a signature call.
112
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25