A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
A dork is a whale's penis.
327