The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The lifespan of mammals is about 1 and a half billion heartbeats.
127
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
Koala Bears are not bears.
34
The average housefly weighs 10 to 15 millionths of a pound.
33
A scorpion can hold its breath for up to 6 days.
19
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402