Parrot parents "name" their children with a signature call.
112
The Basenji dog is the only dog that is not able to bark.
4
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
Female kangaroos have three vaginas.
2
Denmark has twice as many pigs as there are people.
66