The most commonly played domino games are Domino Whist, Matador, and Muggins (All Fives). Other popular forms include Texas 42, Chicken Foot, Concentration, Double Fives, and Mexican Train.
They were played first in Italy and France and later in England and then the New World. Dominoes are frequently called bones, because the earliest dominoes were made from animal bone or ivory.
Diamond was, according to legend, Sir Isaac Newton's favourite dog, who, by upsetting a candle, set fire to manuscripts containing his notes on experiments conducted over the course of twenty years.
DD's exact breed is unknown, being described as either a wolf or a dog in various sources, and in some cases, even a wolf dog hybrid. Although the Rhodesian Ridgeback concept was dropped, it did appear in the in-game data, and could be "recreated".