The couple's effort requires a large financial investment in order to care for the pets. Last year, they spent $700,000 (£508,536) on veterinary treatment.

"Shelters call us, and we take the dogs in and provide all financial care, eventually finding them the ideal foster home where they will live for the rest of their lives," Chris said. We, on the other hand, are responsible for their medical care for the rest of their life."