Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The reindeer is the only mammal that can see UV light.
17
The Basenji dog is the only dog that is not able to bark.
4
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
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6