What does this dog say to everyone who has helped him? &quot;Tank you very much!&quot; On February 17th, Tank, a two-year-old Pit Bull mix, was picked up as a stray by animal control. Tank was taken to the Darlington County Humane Society shelter in South Carolina. Two big obstacles stood in the way of Tank&#x27;s potential rescue: he was a Pit Bull mix and heartworm positive. Without any adopter or rescue interest, Tank found himself on the shelter&#x27;s euthanasia list for April 9th.