Grey guinea pig with white chest near ISU campus

Yesterday around 6pm I realized my grey guinea pig was gone from his cage at home near the ISU campus area in Normal. He's about 10 inches long, fluffy grey fur with a white chest patch, and a tiny white dot on his nose, plus a faint crescent scar on his left ear. I last saw him by the ISU bookstore on College Avenue, outside the campus library near Main Street in Uptown Normal. He's named Mochi and is very shy, a gift from my sister, so I’m really hoping for a safe, quick return; if you've seen him, text 555-0123 or email [email protected].