I opened my nesting box door and much to my surprise found a cat curled up and lounging. The cat ran out the chicken door and was gone. It neither harmed the chickens or ate the eggs. Since it is causing no overt harm to my hens I am reluctant to 'cull' it. What are your suggestions. I am conserned about worms or other diseases. A big ol cat could be a plus in the coop if if offers no threat to my hens. It had a large head so it must be a tom. Does the threat of disease equal the protection a mean ol tom could provide?