Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
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
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12