Adopt yourself a Running Walker Foxhound. They are related to walker coonhounds but they're quieter, less goofy and they're excellent with chickens. I found one on the side of the road here in eastern NC and I took her home and babied her, got some weight on her. All of my neighbors have to keep their chickens penned up but between her and my pit bull, nothing comes on this property. The pit bull had to become acquainted with the shock collar in order to gain some manners around the chickens (he killed 6 the day I brought him home). The Walker Foxhound didn't bat an eye when she saw her first chicken. They like to wander, so I had to tie her for the first few months, but once she found out where her bread was buttered, I could let her roam. I can hear her out there at night baying and chasing down whatever is out there. She comes home in the morning, so exhausted that she shakes and I have to feed her double for a couple of days, but boy does she get the job done. I don't like her to roam all of the time, I don't have a lot of land, so I got one of those Perimeter brand Wi-fi wireless fences and she stays put when I want her to.
A friend of mine has a Great Pyrenese who stopped the racoons flat. Its a big hairy dog, and it would be hot if you're not in the mountains, but its an option.
Try petfinders, put in your zipcode and enter the breed of dog that you're interested in and it will give you adoptable dogs in your area
