One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A domestic cat can sprint at about 31 miles per hour.
274
Lurch, a Watusi bull, had the largest horns in the world.
32
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
The reindeer is the only mammal that can see UV light.
17
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Sharks, like other fish, have their reproductive organs in their chests.
248