http://www.hsus.org/pets/issues_affe..._hoarding.html

The HSUS defines an animal hoarder as a person who has more animals than he or she can properly care for. Another defining characteristic is the hoarder's denial of his inability to care for the animals and his failure to grasp the impact his neglect has on the animals, the household, and the human occupants of the dwelling.
What's the harm if all the animals are cared for humanly and healthy?