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
A lion in the wild usually makes no more than twenty kills a year.
186
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Parrot parents "name" their children with a signature call.
112
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The cat brain weighs about 30g.
167