A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Condoms were originally made of animal intestines or linen.
347
Denmark has twice as many pigs as there are people.
66
Dogs sometimes fake being sick to get attention.
26
Ants tend to survive in a microwave because they find the coolest spot and wait!
17
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
A lion in the wild usually makes no more than twenty kills a year.
186