Tan medium dog with red collar and blue tag

I lost my dog yesterday around 3pm near Mizner Park in Boca Raton, right outside the fountain by the main entrance. He's a tan, medium-sized mixed-breed about 45 pounds, with a white chest patch and a small white scar on his right ear. He wears a red collar with a blue bone-shaped tag that says 'Nico'. He's nervous around crowds, so he might avoid people. I'm in Palm Beach County and this dog is my emotional support; I really need him back. If you’ve seen him or have any info, please email me at [email protected]; I can meet and verify to bring him home.