This is George. He lives next door and Seamus has been wanting to meet him for a long time. 10 days ago, they finally met. And Seamus, despite his great size and puppy excitability, was ever so gentle with George (good thing too, because I swear George could take Seamus in a minute if they ever brawled). Seamus smelled George all over and at one point, he looked at me as if to say: "This dog has the weirdest scent!"
So now when George and Seamus are both outside, we know they can be trusted to play nicely (well--for as long as George will tolerate this puppy).