I will say this, been there. When Mama Dog and Dixie Belle met, it was hell on earth. Mama Dog was a coyote mix (or so our vet assumed) Dixie Belle is a St. Bernard. They would start fighting, and my husband and I would run out there and break them up. We knew that Belle could really hurt Mama, because Mama was already well up in age. But the fighting never stopped. One night the two of them got into so bad that there was no way we could break it up without getting hurt ourselves. So we had to stand there and let them fight. Mama Dog lost a big chuck of her ear. But after that fight, they were the best of friends.

No, I'm not saying just let them fight. That always does not lead to happy endings. I would see about getting Tuffy fixed. Our vet recommened it to us with the Belle and Mama case. Belle was not fixed and Mama was. Usually it was Mama that started the fights. The vet office felt that getting Belle fixed might would help, but they ended up handling the problem on their own before we could decide anything.

I really hope that ya'll can find a way to keep both dogs. I never could have chosen between mine. Good luck!