Ha ha, I'm trying to picture a dog with moon face but it's still cute in my mind! Glad to hear his rash is healing and that he's been having fun at the park. I love taking my dog to the park and letting her run around with her pals, she isn't a super high-energy dog so when we get home she always naps at our feet for the rest of the day.
On that subject, a somewhat related question for you - do you find that bigger dogs at the park tend to pick on your dog? I have a fairly small dog too, mine's a corgi, and sometimes bigger dogs at the park seem to think that it's just fine to play too rough and beat up on her a little bit! Sometimes I have to separate them because it gets too rough. It just seems so mean, when 100+ pound labradors feel the need to knock over my little pooch. And the owners of the bigger dogs do nothing sometimes, and have the attitude of, "Oh, they're just having fun, let them play" when clearly my dog is in a bit of distress and is not having fun. It makes me mad!