Cats recognise the voice of their owner, but never evolved to care.
22
Jellyfish as a species are actually older than dinosaurs and sharks.
383
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
When dragonflies mate, their tails form a love heart.
22
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10