Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Bats sleep 18-20 hours per day.
5
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Sharks, like other fish, have their reproductive organs in their chests.
248
A scorpion can hold its breath for up to 6 days.
19
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12