A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
The seahorse is the only fish to have a neck.
12
Drivers kill more deer than hunters do.
660