Snickers was 1 year old when we brought Baxter home (at 12 weeks). We introduced them slowly and Baxter being the new baby didn't really understand what was going on. Snickers was agitated at first, running up to Baxter and barking, posturing, and basically showing superiority.
It took about two weeks for Snickers to adjust. We always supervised them together, and kept Baxter crated when we couldn't give 100% attention. But after about two weeks, things really calmed down and the turning point came when we saw the two of them sleeping side by side on their pillow. They are now best pals!
It's important to give the older dog the same amount of attention he always got. And also put him first when giving treats, feeding, going out, etc. This reinforces his position as the dominant one.
Good luck!
__________________  Snickers & Baxter Until one has loved an animal, part of their soul remains unawakened. |