I have several friends with fat Labs and I think they're adorable! Little pudgy cuties! It's not uncommon, and I bet George really pampers him, since he seems to be very fond of him, from everything I've read. As for the height thing... a friend of mine played a football extra with him in "Second String" and one of his comments was, "He's not very tall." Mind you, Harvey's a tall guy, probably 6'2 or 3, and he also didn't seem to be too fond of George to begin with, so he may have been biased! :lol:
Anyway, it's such a mild little encounter, I don't know why it wouldnt be believable. Seems casual enough to me. If she'd said they stood and talked for a while and agreed to meet for coffee later or something, I'd think it was a little suss, but it seems inoffensive enough to me to be true.