Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Alligators can live up to 100 years.
337
Dolphins have names for one another.
18
The elephant brain weighs about 6,000g.
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