Your dog could have a compulsive hoarding disorder, has your dog displayed other pathological tendencies in the past?

Hoarding behaviors can occur in a variety of psychiatric disorders but are most commonly found in dogs with obsessive-compulsive disorder (OCD). Those dogs who report compulsive hoarding as their primary type of OCD, experience significant distress or functional impairment from their hoarding. They have symptoms of indecisiveness, procrastination, and avoidance, are classified as having compulsive hoarding syndrome.