Chopper makes his visits in full biker regalia - an outfit that includes a vest, a bandana and little biker "doggles." He even has a little Chopper-sized motorcycle. His human, Mark Shaffer, told ABC news that the costume is part of the way Chopper helps the people he visits.
"As soon as Chopper rides into someone's room on his motorcycle, the patients start to laugh and smile," Shaffer said. "Each therapy dog brings something different to the table and Chopper's whole package provides the therapy."