I will give an opinion too: I am too having this problem with the neighbors dogs!!!! I live in a very small community where everyone knows everyone's animals. I have 2 neighbors 1 with a 100lb mutt he comes over all the time and it is very annoying, it sniffs my pens and riles all my birds up. He also tries to get my rabbits through the bottom of their cages. the other dog that comes over here is part CYOTE (sp) and part something else so it is just wanting to get after everything all the time....
Well their wishes came true they both paired up the other day and got in my BLRW pen and got a hen. They went in between the 2 layers of chicken fencing on one side and then exiting out the other side tearing my pen all to pcs. The cyote dog I have had trouble with before and I have notified the neighbor that it is going to die soon! They seem not to care so therefore I do not care.. I have told both neighbors that if their dogs get 1 of my peacocks they will PAY ME $300 A PEICE for each of them they kill!
And I have 6...they are all aware of this and still show disregard. I paid over $500 last yr for my BLRW hatching eggs last yr to get my beautiful flock established...and I WILL NOT have SOMEONE ELSE'S DOGS kill them.. To top it off now I am in process of building a BRAND NEW PEN out of WELDED wire because the cyote dog goes to chicken wire and will shred it and pulls it apart to make holes, also I had buried the bottom of the fence 6 inches and curled it for varmit invasion, and she just ripped it at the ground tearing all the fence. She is very persist and crafty. And yet when I advised them of this they never once offered to help pay for the fence their dog destroyed!! 
I have 1 Doberman, 2 Choc. Labs, 2 Beagles, and a Jack Russell....and all of my dogs are BIRD trained they do not chase, bite, nip, encourage flight, to any of my birds or there are conseqences! My 7mo. lab pup goes with me in my pens every morning to get the eggs and she checks everyone out for the day..So when the strays got in the fence my birds DID NOT run because they assumed NO DANGER! After I retreived my dead BLRW bird back from the 2 dogs, I took pics via cell phone and sent it to both parties and clearly stated that, THAT WAS THEIR LAST WARNING TO KEEP THE DOGS AT HOME! I now have a loaded 22 by the back door at all times....bottle rockets obviously did not get the point across..but I have a feeling lead will. 
Your dogs MAY not have killed the chicken, they may not kill your chickens....but if they do you will then feel the pain and frustration of raising Your birds from babies and spending all the money and time caring for them...all to having to dig a nice dirt hole. Also karma is a terrible thing, so IF your dogs are the ones that killed it and then thereafter you get yours and someones else's dog comes and kills yours, you will feel the other persons pain... 
On another note, for the person who posted this thread, is a NEW EGG, Jeez she is a new egg, lets not run her off with violence in her first thread posting...!!! 