My buddy is fed up with his chickens not laying and is wanting to sell them. He has 10 and they havent laid any eggs at all for over two months. His mom next door has 30 hens and they are laying VERY few eggs. Is it possible that their flocks have some kind of disease? I have 18 hens and I get around a dozen a day. He also recently got a few more dogs, if they were stressed cause the dogs would they all stop laying?