Well, it's official: I really need to set up a different coop elsewhere on the property. We figured what we had set up was perfect: it was well fortified against the dogs attacking, but the presence of the dogs nearby deterred other pests from entering the coop. That all works well in theory, except that today while I was getting eggs, the hinge on the coop door broke. I didn't notice it, went on my merry way picking up eggs... and as I prepared to leave found Aggie on top of the door to the fence surrounding the coop. She had slipped out of a little gap where the hinges were broken, and of course the second she saw me flew right into the back yard... where our terrier and hound were waiting. The fence door was locked from the outside, and in my panic to get her as I watched the dogs cornering her, I ripped it straight off its hinges then ran them down. They trapped her on the other side of the fence as she tried to get back into the coop, but thankfully all they got was feathers (she lost a lot of her tail) due to her amazing speed and my reaction time. She's very stressed but I can't find any punctures or actual bite injuries/blood. However, I have her downstairs in a crate for observation as I know breaks and serious brusing can present after the animal's adrenaline drops. I'm so shaken by this, and can't abide by the possibility of it happening again. Looks like I need to figure out another place on the property to build a new coop so my poor little chooks are safe and sound from predators of the wild AND domesticated variety.