Photo Credit: @cassondrachristman/Instagram Ruger, a senior pup at Maui Humane Society, is waiting for someone to notice him after a heartbreaking return to shelter life. In an Instagram video shared by Cassie, he lies inside his kennel while she sits beside him and brings him a bed. The shelter dog is nearly 12, and the reel explains that he was found wandering lost after years away from the shelter. Shelter dog has to start life all over at 12…