Tan labrador-mix dog with red collar

I lost my tan labrador-mix dog yesterday around 6pm near Canal Walk and Caroline Street in downtown Fredericksburg. He's about 60 pounds, with a short coat and a slightly stocky build. He’s wearing a bright red collar with a small silver star-shaped tag, and there’s a little white patch on his chest plus a gentle scar on his left hind leg. His left ear flops a bit when he runs, which makes him look extra goofy. He’s our family dog and has sentimental value—my daughter is heartbroken and I’m really hoping someone spotted him and can help bring him home.