The new guy has only eaten multiple mice twice in his life, once when I had him a few months back, and once for my bro-in-law (immediately after he left my place).

He was housed in tanks until I just got him back a few weeks ago, ate 1 large mouse the first time I fed him, and a few days ago ate 3! These were some big suckers, too. I'm thinking he's doing well in the tub