NEWRY, ME Mahoosuc Guide Service's Yukon huskies are loaded into truck kennels and driven to nearby Umbagog Lake for an overnight mushing and camping excursion. Hardworking and well tempered, guide Polly Mahoney describes their dogs as Yukon huskies, because they are descendants from the original dogs Mahoney bred three decades ago when she spent ten years living a subsistance lifestyle in the Yukon Territory.