A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Drivers kill more deer than hunters do.
660
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
The male seahorse carries babies and 'gives birth' to them instead of the female.
7