Condoms were originally made of animal intestines or linen.
347
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
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
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
Early American humans hunted car-size armadillos and used their shells for houses.
12