Join man's best friend in the line Dogs Slot machine online from H5G and IGT, available free at Slotorama. Win with split symbols, free. Dog Slots is a completely free slot game and requires no sign up, membership or money. Simply wait for the game to load and click the start button. Totally free Diamond Dogs slot machine. Play more than free casino games in your browser. Slots, video poker, blackjack, roulette & more.