It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The seahorse is the only fish to have a neck.
12
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Dogs sometimes fake being sick to get attention.
26
Sharks, like other fish, have their reproductive organs in their chests.
248
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