Many of us who own horses joke about buying or adopting more and becoming “that crazy horse person,” who has their own herd. In fact, there is a whole meme culture on this topic online. For a select few of the population, however, owning large numbers of animals is no joke. When individuals collect more animals than they can adequately care for, the behaviour crosses the line into what the mental health community calls hoarding disorder.

Hoarding disorder is a mental health problem which is classified under anxiety disorders in the DSM 5 (Diagnostic and Statistical Manual of Mental Disorders by the American Psychological Association, edition number 5). Animal hoarding and the hoarding of inanimate items are strongly correlated, and often animal hoarders also hoard other things like buckets, newspapers, cardboard boxes, photos, food, household appliances etc.

Typical characteristics of hoarding behaviour are:

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