Lizzy, an 8-year-old pitbull mix, was adopted after spending 451 days at the Marion County Dog Pound. Two other long-term residents, Barkley and Nick, are still waiting for their forever homes.

ARLINGTON, Va. - The saying goes "all dogs go to heaven," but for many service dogs, their time on earth is spent helping people who have seen more than the average human being. Such is the case for ...