I have German Shepherd/Belgian Malinois mixes. The mom is 1/2 and 1/2 and the daughter is 3/4 Shepherd and 1/4 Malinois. They would likely have been fine if they had been raised with chicks from puppyhood since they are herding and working dog breeds. In my case the dogs came well before the chickens. I brought home the chickens recently and my girls have a high prey drive, everything thats small and runs is a chew toy and a fun game to them.I have ordered lots of Brinsea and I know I have to wait a week every time, I am in CA also. Sorry to hear about your sons chicken. What kind of dog do you have? I am always curious to know the bird eating breeds.