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 octopus does not have a blind spot.
273
Dolphins have names for one another.
18
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23