I've had my 20-month old on about the same schedule as you describe (20-30 minutes every day, plus other play time), and he's healthy as a horse and 8.8 pounds. I have no doubt he could exercise longer safely.
Punkin is adorable, btw, and looks healthy to me!
__________________ Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP). Check us out on YouTube |