unless her dog is some kind of train assassin dog, when she turns it loose to get your chickens all it will probably do is come over a pee in your yard, as long as it can't get to your little birdies.
You could consider getting a couple guineas.. they truly are some of the noisiest birds!! They most likely wont last too long, it seems raccoons are quite fond of them. But they would last long enough to make your neighbor appreciate just the one rooster far off in the distance and your neighbor's roo if they get one.
If she threatens again I would call the police and file a report. This threat was probably her feeling you out to see how far she can push you on the subject. Politely tell her that you moved out to the country to live the country lifestyle and you are allowed chickens, and roosters are allowed too. I would be a smart ass and tell her I was planing on breeding 5 different breeds and for that you need at least two rooster per breed. She won't know the difference, but it would be funny to watch her doing the math in her head until the total was reached.... boy what a laugh that would be. When she starts flipping out at the total she has figured in her head, come clean and tell her "No, I'm not going that far with this chicken deal, but if you keep it up I will!"
You could tell her the chickens wont be around too long, your are raising them to feed the very large breeding snakes you have coming.
that should shut her up. Tell her you are going to be raising them in the garage and let them out with the chickens during the day... hope none get out!
Na.... just see how it goes and if she does make up some kind of threat again do call the police and file a report. If an officer comes out and talks with her, that will probably put an end to it all. She sounds like "all fluff and no stuff"
Good luck
