Bring Fido for a trip down the river with $10 River Tubing. Dog owners can rent a tube with a bottom for their pet to sit in. Tubes come in different sizes based on weight and can be linked to one another so canine companions don't float away. The Duluth location of $10 River Tubing is open seven days a week from 10:00am to 7:00pm—the last trip leaves at 4:30pm each day. Dog owners can visit $10 River Tubing's official website for tickets, waivers, and directions.