A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A scorpion can hold its breath for up to 6 days.
19
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A group of unicorns is called a blessing.
304