Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
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
The elephant brain weighs about 6,000g.
274
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Only 3% of bird species have penises.
0
Jellyfish as a species are actually older than dinosaurs and sharks.
383