It is less than 0.39 inches in diameter. An electric eel can produce a shock of 600 volts. Cows can sleep standing up. Submitted by D. A Giant squid's eye can be as big as a basketball. Submitted by SpeederGal Salamanders are known to come out of wood when it was burning inside a fireplace, this is because Salamanders hibernate in wood.
Chimpanzees use tools more than any other animal except man.
Elephants purr like cats do, as a means of communication.