Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The largest breed of rabbit is the Flemish Giant.
65
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The Basenji dog is the only dog that is not able to bark.
4
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40