A crocodile cannot stick its tongue out. Cats have over one hundred vocal sounds, dogs only have about ten. A snail can sleep for three years. Cat's urine glows under a black light. All Polar bears are left-handed. An ostrich's eye is bigger than its brain. Butterflies taste with their feet. American Airlines saved $40,000 in 1987 by eliminating one olive from each salad served in first-class. Americans on average eat 18 acres of pizza every day.