The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Early American humans hunted car-size armadillos and used their shells for houses.
12
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
The seahorse is the only fish to have a neck.
12
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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10