I feel for you. Since about 5 months ago, I am awakened by the crowing of a rooster in my urban neighborhood. I suspect they are being raised for other than eggs. Can you say "cock fight"?
From the physical evidence, I think my dogs were kidnapped and used for dog fighting. When I found their bodies, they were all scarred up, but they were left lying, posed as if sleeping, on the side of the road at the entrance of my street. One had been strangled. I figure they must have taken out a few pit bulls before they tired, and were laid out in respect. They were 1 week shy of 1 year old, even though about 200 pounds apiece. The Cane Corso breed takes two years to mature. Another few more months and they could have taken any pit bull, probably would have taken out the dognappers, too. I still miss my girls.
Like I said, I don't live in the best of neighborhoods.