Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
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
The head of a jellyfish is called the "Bell."
6
The Basenji dog is the only dog that is not able to bark.
4
Alligators can live up to 100 years.
337
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
Moths are unable to fly during an earthquake.
328