How Can I Tell If Two Dogs Will Get Along. Training can also include having the dogs sit or lie down several feet apart, facing each other, for several minutes at a time during the day to get used to each other. If necessary, enclose the older dog and let the new one walk around the house to inspect it and get used to it.

It turns out that there are several reasons your neutered dog may be aggressive towards an unneutered. The two dogs rush to grab the toy or to get attention first instead of politely waiting their turn. If your dogs can’t seem to get along, your immediate concern should be for the dogs’ safety.