Evening in the park

Stopped in Brockwell Park on my way home. There was a dog that I think was lost. It was running around, ignoring other dogs and looked like it was searching for its humans. I saw it a few times in different areas of the park, always on its own. I tried to call it over after I took this photo in case there was a phone number on the collar that I could call. But it ran off and disappeared. I hope it found its people or its way home.