Cats and dogs can hear ultrasound.
350
Only 3% of bird species have penises.
0
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Female kangaroos have three vaginas.
2