Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The oldest recorded elephant lived for 82 years.
213
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
When you shave a guinea pig it looks like a little hippo.
19
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
A cow produces around 200,000 glasses of milk in her lifetime.
373