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.
In sleep, as in all things, cats are highly individual. Some cats sleep less than 16 hours a day and some sleep more; some spend as much as thirty or forty percent of their sleep time in a deep sleep cycle (this is particularly true of older cats).