The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
The cat brain weighs about 30g.
167
Only 3% of bird species have penises.
0
The reindeer is the only mammal that can see UV light.
17
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
A domestic cat can sprint at about 31 miles per hour.
274
Cats sleep for 70% of their lives.
8