Dogs sometimes fake being sick to get attention.
26
The reindeer is the only mammal that can see UV light.
17
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
The head of a jellyfish is called the "Bell."
6
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Jumping fleas can accelerate 50 times faster than the space shuttle.
218