Cats and dogs can hear ultrasound.
350
A 42-foot sperm whale has about 7 tons of oil in it.
209
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Penguins have a gland above their eye that turns saltwater into freshwater.
12
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
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