The Basenji dog is the only dog that is not able to bark.
4
Cats sleep for 70% of their lives.
8
Early American humans hunted car-size armadillos and used their shells for houses.
12
Alligators can live up to 100 years.
337
A domestic cat can sprint at about 31 miles per hour.
274
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492