Yes, adult king snakes- feed about every 10 days- one adult mouse. King snakes are often not as "smart" as corn/rat snakes- they tend to be more food-focused, so be cautious about handling them when hungry. Some are very good, others think hands are edible-it's hard to generalize. For working with the public, it might be best to handle them "midway" between meals -but then watch for a tell-tale bulge above the vent/cloaca that means they're about to take a dump.