Petfinder is simply a website for other adoption groups to list their adoptable animals. It does not regulate which animals are adopted or euthanized since that is not their purpose. If an animal is inaccurately labeled still up for adoption and it has since been adopted, then you should e-mail the adoption group to notify them that there's been an inaccuracy. Other than that, yes, unfortunately, some dogs have been known to remain unadopted for months and years