If you have an indoor/outdoor cat, as do I, you no doubt find him asking to be let out, even though he has his cat doors. Mine does daily, usually at night. I go to the door, open it and he eagerly runs into he mudroom, awaiting the opening of the next door, though both are equipped with cat doors. If I actually go out into the back patio with him he seems delighted, rolling around on the stones, watching me. I suspect he would love a hunting companion. (Preferably, I expect, one a bit quieter and more stealthy than myself.)
sub sandwiches