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by Lee
(Lancashire)
We have 2 jack russell brothers who are 3 and a half approx. We have had since they were 8 weeks old. They have always got on really well with no problems up until about 2 weeks ago. They now cannot be in the same room as every time they are they start to fight violently, even when we pick them up they are still growling and showing their teeth. If they are looking to be the dominant one then I would have expected this a long time ago not at 3 and a half. They have not been neutered but would this make a difference at their age. I do not want to get rid of one as this admits defeat but we cannot go on like this. Any advice gratefully received.