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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cats and dogs can hear ultrasound.
350
The colossal squid has the largest eyes in the world.
4
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6