Animal Facts Guinea Pig Guinea pigs jump straight up when they are happy. This is called popcorning. Photo: Juniors Bildarchiv/GMBH//ALAMY STOCK PHOTO 144 facts found in category 'Mammals' Get Animal Facts by Category AmphibiansBirdsCollectionsCreepy CrawliesFishMammalsPrehistoricReptiles
Guinea Pig Guinea pigs jump straight up when they are happy. This is called popcorning. Photo: Juniors Bildarchiv/GMBH//ALAMY STOCK PHOTO