Well our Sherman is a very loveable dog but he is very dominating. If I am telling one of the other dogs what to do, he has to run over in a huff and make sure they are minding. In the past two weeks we have had several dog fights and these are pretty scary all involving Sherman and Bandit or Casey (both red heelers and brothers). On Tuesday (5 days ago) we had Sherman neutered so we are hoping this will help a lot. Yesterday we were all outside doing chores, mowing lawn etc and Sherman attacked Bandit for no reason but we couldn't get Sherman off of Bandit (who weighs 20 pounds more), he latched onto his neck/shoulder and wouldn't release we finally got him off and he ended up with 15 stitches and $375 vet bill. Bandit and Casey (heelers will be neutered here in the next month.) I hope this will help our issue.