So since we started our efforts Buttercup's jealousy and fight-picking have only worsened. They had two particularly bad fights this weekend and we had to visit the vet to treat a bite abscess. Now they are unable to even be in the same room without Buttercup starting her stiffen-up-and-growl routine. We're keeping them separate now as I'm afraid of what more could happen.
So we are looking to re-home sweet Winston. We're putting out feelers in our area but I will likely also post him on this site. I'm eager to get him into the right place before he sustains any further physical or emotional scars from his experience with us. Vet told us it would take a few months before spaying and neutering begin to help -- and now that they've established a negative pattern it might persist. I don't think I can keep them both safe for two more months now that Buttercup is so riled up.
I feel just terrible that we couldn't give him a wonderful home and also feel it's unfair to both of them to try to keep them together when they clearly don't get along.
Wow - I'm so sorry to hear you're going through this. What's crazy is that we had this exact same situation with our two dogs. We adopted them both at the same time and they were supposedly a bonded pair - slept together, ate together, played together...everything. About a month after we had them home the male dog stole a treat from our female dog and she let loose on him. After this they kept getting into fight after fight until we ended up with one very very very scared male dog and one extremely aggressive female. They couldn't be in the same room together and we had to keep one crated at all times. It was to the point that the male was so scared that he tried to tip his crate over and into a baby gate just to get to the female. After two weeks of this and no subsiding we knew we either had to get help or re-home one of the dogs.
We decided to see a behaviorist at Tufts University vet clinic and they essentially told us it could take years to get them back to being ok with one another and that it was happening because of a 'sibling rivalry' scenario where both dogs wanted to be the pack leader. What she told us is that we had to figure out who would make the better leader and treat that dog as the leader of the two while still maintaining that the humans were the ultimate pack leaders. She recommended choosing the female dog because the male had a lot of anxiety and wasn't stable mentally at the time. Then, we were directed to only give them attention, food, toys, etc. if they first followed a command (I believe this is the same thing you have been directed to do). This seemed only to help when they weren't together, but once they saw each other they couldn't be broken up.
What ultimately helped us get over the hump was by following the routine, individually, of making the dog follow a command before rewarding with a treat, attention, etc. and very very very slowly reintroducing them to each other. I started by keeping one dog crated with the other one on leash, walking the leashed dog near the crate, making her sit (which is where the commands came into play), give me her full attention, and then feeding her treats. I did this over and over and over again and reversed the roles so each dog had turns getting treats. The treat in my hand would distract both dogs enough that neither would growl and both would pay attention to me. It took about a month of this before I could separate them by a baby gate and do the same routine. After about another month behind a baby gate with that routine, i began leashing one dog safely at one end of the room, leashing the other and leading it very very slowly, feeding treats along the way, towards the other dog. I would try to keep both dogs eyes on me and on the prize (treat). I followed this routine for about two months and eventually I was able to, very carefully and with harnesses that had handles, do this same thing but without the leashes. We luckily had safe spots to leash each dog while we were home so they could be in the same room and have to deal with the presence of the other. For a long time we would hear growls from each if they even looked at each other wrong. It seriously took about 8 months all together to get them in the same room, ok with each other, sitting on separate beds, and not spontaneously fighting.
After I was able to get them into the same room together with no growling or fighting I was able to let them feel out their own boundaries - this took a lot of dedication and very vigilant watching of their body language. I would allow them to sit near each other, but if either one got tense, I would command one or the other to go back to their own spot. Very slowly they re-learned that the other was not going to just snap and regained trust in one another enough that they began to snuggle, clean each other, and eat together again. It took about a year to get them to that point.
It's been almost another year now and we still cannot give the female direct attention if the male is too close nearby (the same room is ok, but within 10 feet or so she gets crazy). It's the exact scenario you described where it happens when you're giving the dog attention and she sees the other dog and gets crazy. Neither dog is allowed on the sofa unless specifically directed and when we give direct attention we make sure her face is facing us and if it isn't we immediately stop giving her attention. Usually what happens now is she re-directs her attention so everything is ok. Honestly, I don't think this will ever change, but because we have learned her body language we are able to stop any fights from happening before the first growl. It just takes lots of time and a lot of persistence to get to this point.
I wish you the best of luck and I hope you are able to find a home for your pup or able to find a way for them to live harmoniously. It's not easy at all and my heart really goes out to you.