A duck's quack doesn't echo, and no one knows why. A group of geese on the ground is a gaggle, a group of geese in the air is a skein. If you bring a raccoon's head to the Henniker, New Hampshire town hall, you are entitled to receive 10 cents from the town. All porcupines float in water. Emus and kangaroos cannot walk backwards, and are on the Australian coat of arms for that reason.
Cats have over one hundred vocal sounds, while dogs only have about ten.
Cat's urine glows under a black light. The underside of a horse's hoof is called a frog. The frog peels off several times a year with new growth. Camel's milk does not curdle. The United States has never lost a war in which mules were used.