Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
One litter of kittens can be produced by more than one father.
57
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 technical term for a cat’s hairball is a “bezoar.”
117
Many hamsters only blink one eye at a time.
185
Camels have three eyelids to protect themselves from blowing sand!
30
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6