My gregarious little bulldozer accompanied Alyssa and I to the park today and then with us to the local dairy bar (he got gourmet treats for doggies). People encountering him naturally wanted to see him up close. Just a few days ago, Luke would have met them halfway. That is to say, as they would approach, he'd cheerfully go greet. Not today. He hid behind me and cautiously poked his muzzle around my leg juuuuuust enough to see. I picked him up (this is getting to be quite the armful) and he buried his muzzle in my neck.
When the crowd subsided, he resumed his playful stance with Alyssa.