Cats recognise the voice of their owner, but never evolved to care.
22
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
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 male seahorse carries babies and 'gives birth' to them instead of the female.
7
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9