Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
The oldest recorded elephant lived for 82 years.
213
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Bats sleep 18-20 hours per day.
5