AllMovie

In One Billion Trillion BC, cave dweller Porky Pig starts his day by playing catch with his pet dinosaur Rover. Then he reads the latest issue of "Expire" (The Magazine for Cave Men), which informs him that his animal-skin clothing is out of date. There is nothing else for Porky to do but go hunting for a new Spring wardrobe, an expedition which leads to a dangerous encounter with an inordinately surly black panther. Listen for those ersatz cameo appearances by radio favorites Kate Smith and Jerry Colonna.