Today a fox came by and killed two of my free ranging hens, all that we found was a pile of feathers, the chicken were carried off. Later we saw two foxes running around, it is a male and female fox they have a den in the neighborhood. We really need a guard dog, what is the best kind to get? Or any other suggestions to keep the foxes away. My husband has fox hounds but i dont know how they would be with the chickens.