Parrot parents "name" their children with a signature call.
112
Cats recognise the voice of their owner, but never evolved to care.
22
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
The seahorse is the only fish to have a neck.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23