My beagle, Shorty, that killed my chickens was attacked just a few weeks ago by dogs/coyotes/something and left for dead. He had to stay at the vet for a week getting IVs etc. He has been home about 5 weeks and is just getting where he can hold his head up at a normal level and his rt. eye is almost looking like normal (it was looking off to the side)....anyway, he has had a rough few weeks and was just trying to survive. Because of his injuries he has spent more time at home, where before he was off "hunting". I think the attacks on my chickens were a combination of boredom and an easy target....he has never made any move toward them before.
I did put a training collar on him yesterday and gave him the tone twice and he left the coop area just by getting the tone....not really sure why....I did not say anything to him but guess he did get the "look" and the tone. Saw him coming back out to the coop yesterday afternoon and my guineas chased him off.
Decided I would just focus on one dog at a time. My German Shorthair, Hoot, is the more docile....Shorty is the brains, Hoot is the brawn but only when Shorty says its okay. So I thought I would get a grip on Shorty first. One other thing I have noticed is that Shorty has been more aggressive with people since he was attacked....this may only be the tip of the iceberg. Either way, I have got to get him in control because I cannot have him being aggressive to my grandchildren, much less to my chickens.