When you shave a guinea pig it looks like a little hippo.
19
When cats are happy, they may squeeze their eyes shut.
10
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
In Australia, there are spiders big enough to eat snakes.
20
Condoms were originally made of animal intestines or linen.
347
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
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17