A cat named Shelby that went missing from an Australian family's home thirteen years ago returned to their front doorstep recently, with severely matted fur and a lice infestation. The mother of the family took the seventeen-year-old cat, which she thought was a stray, to her veterinarian's office for treatment. It was only then, as she sat in the office, that she wondered if the cat could possibly be Shelby. After an old photo comparison to the cat's markings and the opinion of the vet, the cat was considered to be their long-lost pet after all. Shelby's return was a happy occasion for everyone in the household — except for their other pet cat! Via Laughing Squid.