The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Cats and dogs can hear ultrasound.
350
Drivers kill more deer than hunters do.
660
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
