Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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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
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cats recognise the voice of their owner, but never evolved to care.
22
One in three dog owners say they have talked to their pets on the phone.
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