Our two Corgi's get along well and the older girl just ignores them both! We got the puppy so that Butterball would leave our older girl alone. He was constantly trying to play with her and she wanted no part of him. Heidi is the "queen" of the house but she stays to herself and sleeps a lot. The two Corgi's are GREAT! At first Butterball kind of avoided Baxter and wasn't sure what to make of him. But after a few days he decided that he was the "big brother" and he now concerns himself with everything the little one does. They play all the time and it is so cute. Baxter has no fear and goes at Butterball full speed. They go everywhere together, it is adorable. If one goes outside the other is right behind. We take Baxter out on a leash in the yard after he eats so he can concentrate on going potty and Butterball walks right along with us all by himself. I think he's afraid he'll miss something. We have also noticed that Butterball has become a tattle tail! If Baxter is doing something he's not supposed to Butterball comes and tells us. For example Baxter had one of my shoes and snuck it under the table to chew,Butterball started barking at him and looking and me and my husband to let us know Baxter was being bad! I am so glad we added Baxter t the family, he assures that Butterball gets lots of play and excercise!