All of the Pet Supplies sites listed below accept Google Checkout as a payment method:

PETCO - PETCO is a leading pet specialty retailer that provides the products, services and advice that make it easier for our customers to be great pet parents.

PetSmart - PetSmart is the largest specialty retailer of services and solutions for the lifetime needs of pets. PetSmart provides a broad range of competitively priced pet food and pet supplies, and offers complete pet training and pet adoption services.