A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The elephant brain weighs about 6,000g.
274
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
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
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Only 3% of bird species have penises.
0