We know this isn't an easy decision, and there's no judgment here. Hamster surrenders in the Boulder and Denver-Metro area are now handled by the Humane Society of Boulder Valley (HSBV), an open-admission shelter that will take your hamster and find them a loving home. HSBV is located at 2323 55th Street, Boulder, CO 80301. Their phone number is 303-442-2030.