Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Dogs sometimes fake being sick to get attention.
26
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The oldest recorded elephant lived for 82 years.
213
In 1949, an official boxing match between a bear and a man was held. The bear won.
41