Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
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
When cats are happy, they may squeeze their eyes shut.
10
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10