I know there are many breeds that are great for guarding livestock as they have been bred for it for hundreds of years. But those are all huge and will suffer in our heat, plus out of my price range. Now, I know "it depends" is probably the best answer here, but I'm going to ask anyway: What, in your opinion, is a good medium sized breed of dog to live with my chickens and keep the danged squirrels away, plus guard the chickens? I am capable of training animals so that isn't a deterrent but I don't want a pet or a house dog. It'll only have a bit over 1/4 acre to be on but the fence is secure. It rarely freezes here but is over 100 degrees at least some every summer. Also I don't want to feed a dog the size of a horse. Or will a small goat or something do the same job? Please don't suggest geese or guineas, I don't want a noisy critter. I know a donkey will but again, too noisy.