Heathcliff and the Catillac Cats

Journey to the Center of the Earth [Catillac Cats] (1x102)

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When Cleo's interest is aroused in the subject of Archaeology, the Catillac Cats decide to set out on an archaeologist expedition of their own. They travel through catacombs on a prehistoric adventure that offers Saber-toothed tigers, dinosaurs, and even Cleo and Riff Raff's cavecat ancestors!