I was wondering about this as well. The first thing some of our hens do in the morning is haul ***** to see if the dog bowls are out! It's pretty funny! Anyways, our dogs have a weird eating schedule-they'll eat 1/2 the bowl at night and 1/2 in the morning. I try to bring the bowls in at night. The dogs eat grain free dry with Canidae canned plus my own homemade mix of chicken gizzards, veggies, ground turkey, pastured eggs and sometimes chicken livers. My only concern is I'm giving the dogs some arthritic blend supplements and was wondering of that would affect the hens. It's glucosamine, boswellia and curcumin. So far, so good. Egg count does not seem to be affected. Anyone have any thoughts on this?