A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5