Cats and dogs can hear ultrasound.
350
The octopus does not have a blind spot.
273
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45