Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Mosquitoes don't just bite you, they also pee on you.
11
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A group of pugs is called a grumble.
10