Once Jack mastered that, it was time to test him at sea. Pulling it off was incredibly tricky as unlike on land, Jack can't run to the whale poop. Instead, Yee would have to pick up on the dog's cues.

This stray dog from San Francisco is helping scientists at sea. Some dogs go down in history ... Despite orcas' large size, their poop isn't easy to find. Giles described it as "looking for ...