A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The colossal squid has the largest eyes in the world.
4
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
When dragonflies mate, their tails form a love heart.
22
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8