Tufts.edu: Animal Hoarding Research
- Definition of pet collecting, research findings, links to articles.
- http://www.tufts.edu/vet/cfa/hoarding/

Loving Animals to Death
- "Animal hoarders think they're helping their furry friends, but mostly they're just feeding their own twisted psyches." [Salon]
- http://archive.salon.com/people/feature/2002/03/08/hoarders/index.html

Collectors: Kindness Gone Awry
- Factsheet from PETA about the disorder, with references.
- http://www.peta.org/factsheet/files/FactsheetDisplay.asp?ID=27

Psychiatric Times: People Who Hoard Animals
- An article by Randy Frost, Ph.D., providing an overview of research, hoarders' rationales, and possible explanations for the behavior.
- http://www.psychiatrictimes.com/p000425.html

St. Petersburg Times: Woman may be Animal Hoarder
- An article by Jamie Malernee about a local incident as well as other cases and the problem across the U.S.
- http://www.stpetersburgtimes.com/News/070201/Hernando/Woman_may_be_animal_h.shtml

Animal People: Animals in Bondage: the Hoarding Mind
- An article about seven cases, statistics on dog, cat, and horse hoarding, and enabling behavior.
- http://www.animalpeoplenews.org/99/1/hoarders.html

Amarillo Globe-News: Cat Collector to Seek Counseling
- A brief article about a woman who recognized herself as a collector, yet her animals were well taken care of. Registration is required to view the article.
- http://www.amarillonet.com/stories/012100/usn_cats.shtml