 When the Whiskers group temporarily split into two groups during a drought and food shortage in the third series, Rocket Dog assumed the leadership of the splinter group.She mated with a roving Zappa male in the middle of the third series, but her pups died in a premature birth caused by the strain of her new-found leadership.When the splinter group was reunited with the Whiskers, Rocket Dog returned to being a subordinate female under her mother without any fuss.