The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
A scorpion can hold its breath for up to 6 days.
19
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Drivers kill more deer than hunters do.
660
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20