Animal hoarding — keeping far more animals than can be properly cared for — causes severe welfare harm and requires coordinated response from animal welfare and mental health services.
Animal hoarding welfare harm is both acute and systemic. Individual animals in hoarding situations suffer from severe malnutrition, untreated disease, and social conditions inappropriate for their species. Psychological welfare harm from living in chaotic, resource-scarce environments adds to physical suffering. The complex psychology of hoarding means that simply removing animals without addressing the underlying mental health condition results in near-certain relapse. Effective response requires coordinated animal welfare intervention to rescue animals and provide emergency care, combined with mental health treatment for the hoarder, and follow-up monitoring. Animal welfare organizations working without mental health partnership achieve poor long-term outcomes.