There are approximately three chickens for every human on Earth.
13
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
Cats recognise the voice of their owner, but never evolved to care.
22
In Australia, there are spiders big enough to eat snakes.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
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