A cockroach will live nine days without its head, before it starves to death. A duck's quack doesn't echo, and no one knows why. 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. Camel's milk does not curdle.
All porcupines float in water.
Cat's urine glows under a blacklight. They actually pass out from sheer terror. An ostrich's eye is bigger than its brain. A pig's orgasm lasts for 30 minutes. Armadillos have four babies at a time and they are always all the same sex.