The game of "red dog" is also known as "acey-deucey" or "between the sheets". The original version of red dog was popular in the old west. However, red dog was an easy mark for cheaters, and it was played less and less. Some casinos revived red dog in the recent decades, but changed it to deter cheaters. This newer version of red dog has some significant changes, and is also called casino red dog.
Most of the newer casino's don't offer red dog, and it is getting harder and harder to find. red dog is usually dealt from a shoe containing four or five decks, although single deck games of red dog can be found occasionally, as can red dog games with 6 or 8 decks.