Valves inside the blood vessels of the giraffe's neck keep
the blood from rushing up the head that causes passing out.

House flies are so sensitive to danger because they have a pair
of compound eyes made up of thousands of separate eyelets.

The sensory endings on the body of a platypus can pick up tiny
electrical currents given off by the nerves and muscles of prey.

Using its large powerful rear legs, a grasshopper
can make gigantic leaps of 20 times its length.