There are more collect calls on Father's Day than any other day of the year. Heinz Catsup leaving the bottle travels at 25 miles per year. It is possible to lead a cow upstairs but not downstairs. Men get hiccups more often than woman. Armadillos can be housebroken.
Human teeth are almost as hard as rocks.
A mole can dig a tunnel 300 feet long in just one night. Ancient Egyptians slept on pillows made of stone. A hippo can open its mouth wide enough to fit a 4 foot tall child inside. A quarter has 119 grooves on its edge, a dime has one less groove. A hummingbird weighs less than a penny.