When dragonflies mate, their tails form a love heart.
22
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Tigers can see 6 times better at night than humans.
305
Whales and dolphins can't taste anything other than salt.
11