There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Parrot parents "name" their children with a signature call.
112