The raw material cost of the metals used in a current penny is only about 0.6 cents per coin, according to prices quoted on the London Metal Exchange, and a breakdown of a penny's composition from the mint.
Read by: 274,003 pet lovers. There's no doubt about it: cats sure know how to sleep. Although the amount of time spent napping varies from cat to cat, and depends on the cat's age and personality, felines spend an average of 13 to 16 hours each day curled up in slumber. Only the opossum and the bat sleep more â napping away almost 20 hours a day. Nobody is sure why cats sleep so much.
They do, however, sleep deeply and even dream. The remaining quarter of catsâ sleeping hours is spent in deep sleep, but older cats might spend as much as 30 percent or 40 percent of the time at that level. Cats in deep sleep are usually curled up with their eyes tightly closed.