A giraffe's kick is so powerful that it can decapitate a lion.
216
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Bats sleep 18-20 hours per day.
5