Superman and Clark Kent

Clark Kent goes to get lengths to pretend that he and Superman are 2 different people. Eventually Lois wonders why they are never at the same place at the same time. My problem with 3 of the same puppies lying around the house is to make sure that they are NEVER at the place at the same time, thus preserving the illusion that there is only one Super Puppy. So far we have success, but it has only been one day. But I have a feeling that one day when Luke turns 3 he will come out of his bedroom holding all 3 puppies saying "Mom, WTF?"