On average, it takes 660 days from conception for an elephant to give birth.
19
Rats multiply so quickly that in 18 months, two rats could have over a million descendants.
33
Rattlesnake mating sessions have been known to last more than 22 hours.
232
The oldest pig in the world lived to the age of 68.
65
Cows can sleep standing up, but they can only dream lying down.
745
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Cuban rescue workers use sniffer rabbits to find people in collapsed buildings.
10