Animal hoarding - the accumulation of large numbers of animals beyond the owner's capacity to provide adequate care - causes profound welfare harm to hundreds of thousands of animals annually and requires coordinated legal, veterinary, and social intervention.
Animals in hoarding situations experience some of the most severe welfare deprivation seen in companion animal settings. Malnutrition, overcrowding, unsanitary conditions, untreated injury and disease, and profound psychological distress from constant competition for resources are typical findings. Survivors of hoarding often have lasting behavioral effects including fearfulness and difficulty forming attachments. The welfare crisis in hoarding cases is compounded by the challenge of intervention - hoarders typically resist removal of animals and may actively obstruct welfare inspectors. Multi-agency response with mental health support alongside animal welfare enforcement is more effective than enforcement alone.