It could really depend on a lot of things. My panther went 30 days without pooping and finally a tepid shower got things going. He also did not eat a whole lot during that time. I think the older they get and the less they eat, the less they poop. Adults may poop once a week and that is not anything to be alarmed about. Also, it's winter, their metabolism slows down. Try the shower thing and see if that helps.