Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Alligators can live up to 100 years.
337
Domestic pigs average a top speed of about 11 miles per hour.
182
A group of kittens is called a "kindle".
10
Cats and dogs can hear ultrasound.
350
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10