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.
Only a quarter of the time that your cats spend sleeping is actually when they are in a deep sleep. This is true for younger cats at least, as older cats may spend more like 30 to 40% in a deep sleep. Typically, if your cat is curled up in deep sleep with twitching paws or whiskers, they are dreaming .