 In the casino, where D.J. crashes onto the table of dogs playing  poker, the dogs are the Russian dog from _Hare Ribbin (1944)_ (qv),  Charlie Dog from a trio of Porky Pig shorts, Spike and Chester from  _Tree for Two (1952)_ (qv), the farm dog from the Foghorn Leghorn  series, and the twin pit bull puppies Ham and Ex, from the early  cartoon _I Havent Got a Hat (1935)_ (qv) (best known for the first  appearance of Porky Pig).