The Ottawa Pet Rat Rescue is the first charity that I partnered with in order to make buttons for a cause. They are near and dear to my heart: I fostered and adopted from them and have benefited from so many ratty kisses!
Ottawa Pet Rat Rescue (OPRats) is a registered, non-profit organization working to raise awareness and share information about pet rats. They are involved in local rescue, fostering, and adoption. They advocate adoption over purchasing rats from pet stores or breeders, as the supply of rats far exceeds the demand, and the conditions at commercial breeders who supply pet stores with their rats are inhumane. Their mission is to encourage, educate and support rat-parents and potential rat-parents so that more rats can have happier, healthier lives.
More information on this worthwhile cause can be found on their website.