The Rugrats go to Las Vegas, where they are less interested in Rat Pack legacies than in liberating the "kitties in prison" they’ve seen in photographs. Those kitties, actually Siberian tigers cared for by the performance team Heimlich and Bob, are soon set free in this particularly funny installment. Watch A Rugrats Vacation (1997) Free Online – The adults decide to bring the babies and Angelica to Las Vegas on…