Despite his best efforts and one or two volunteers Mdogo hasn't come close to swallowing an adult human. Just the same, he's working his way up the chain of prey sizes by eating progressively larger dogs and other creatures.
Swallowing prey at least as large as himself and lacking the "Stupid short legs" super-elastic belly some Stregaverse badgers have sometimes results in part of the meal hanging out for a while. Eventually digestion will make room for the rest and ultimately he'll hack up a mass of fur, the leash and other indigestibles. It nothing else, this way he gets to taste it longer.