I have 2 dogs one named Luna who is 42 lbs and my other dog Loki who is 20 lbs. I just recently brought Luna home. The two did great with their meet and greet together but since they have been together in the home Loki has struggled with getting along with Luna. Loki often confuses her trying to play as her being violent. Loki constantly is the aggressor while Luna is trying to play. I feel as if I have done everything right to get the two to acclimate properly but my attempts I suppose have failed. They do get along time to time but Loki often throws all that out the window. Is there anything I can truly do to get them to coexist with no issues?