A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When you shave a guinea pig it looks like a little hippo.
19
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A domestic cat can sprint at about 31 miles per hour.
274
Parrot parents "name" their children with a signature call.
112