Lost dog: small beagle mix, tan and white

I lost my beagle mix, Rio, yesterday around 3pm. He's a small-to-medium dog, about 25 pounds, with tan and white fur and a distinctive black patch over his right eye. He’s wearing a red nylon collar with a round silver tag that says Rio, and he has a small white heart-shaped patch on his chest along with a tiny notch in his right ear. I was at the Oneonta Public Library on Main Street when he darted after a jogger's dog and disappeared toward Neahwa Park; I’ve been panicked since then because he’s timid but super loving and really important to me, like a family member. If you’ve seen him, please email me at [email protected] or text me—no questions asked, I just want him home.