- Circulation journal article on pet ownership and cardiovascular risk
- Mental Health Benefits of Pet Ownership: statement from American Psychological Association; article from Psychology Today
- Pet Food Manufacturers Association survey on pet ownership and the elderly
- The Atlantic Magazine article on pet ownership
- Pet Therapy information from the Delta Society
- Health and the Human-Pet Bond, from The Merck Manual for Pets
- Cats and Seniors, from the American Humane Association
