We are planning on getting chickens in the spring & we already have 3 dogs. In case is matters we have a Chihuahua, Sheltie & Pit mix. One of our dogs, I am pretty sure I know which one is notorious for getting pigeons. I am planning on building the coop in the backyard & need advice from those more experienced on how to best introduce the dogs to the chickens & also how to properly build the coop to keep the chickens safe. Thanks!