[1] ASPCA (2014) Pet Statistics. http://www.aspca.org/about-us/faq/pet-statistics
[2] Shore, E.R., Douglas, D.K. and Riley, M.L. (2005) What’s in It for the Companion Animal? Pet Attachment and College Students’ Behavior towards Pets. Journal of Applied Animal Welfare Science, 8, 1-11. http://dx.doi.org/10.1207/s15327604jaws0801_1
[3] Miller-Dowling, J. and Stitely, C. (1997) Killing Ourselves over the Euthanasia Debate. Shelter Sense, 2, 4-15.
[4] American Humane Association (2013) Keeping Pets (Dogs and Cats) in Homes: A Three-Phase Retention Study. Phase 1: Reasons for Not Owning a Dog or Cat.
http://www.americanhumane.org/aha-petsmart-retention-study-phase-1.pdf
[5] American Pet Products Association (2013) APPA National Pet Owners Survey, 2013-2014. American Pet Products Association, Inc., Greenwich.
[6] Taylor, N. (2004) In It for the Non-Human Animals: Animal Welfare, Moral Certainty, and Disagreements. Society and Animals, 12, 317-339. http://dx.doi.org/10.1163/1568530043068047
[7] Scarlett, J.M., Salman, M.D., New Jr., J.G. and Kass, P.H. (1999) Reasons for Relinquishment of Companion Animals in US Animal Shelters: Selected Health and Personal Issues. Journal of Applied Animal Welfare Science, 2, 41-57. http://dx.doi.org/10.1207/s15327604jaws0201_4
[8] Shore, E.R. (2005) Returning a Recently Adopted Companion Animal: Adopters’ Reasons for and Reactions to the Failed Adoption Experience. Journal of Applied Animal Welfare Science, 8, 187-198. http://dx.doi.org/10.1207/s15327604jaws0803_3
[9] Weiss, E. and Gramann, S. (2009) A Comparison of Attachment Levels of Adopters of Cats: Fee-Based Adoptions versus Free Adoptions. Journal of Applied Animal Welfare Science, 12, 360-370.
http://dx.doi.org/10.1080/10888700903163674
[10] New Jr., J.C., Salman, M.D., King, M., Scarlett, J., Kass, P. and Hutchinson, J. (2000) Characteristics of Shelter-Relinquished Animals and Their Owners Compared with Animals and Their Owners in US Pet-Owning Households. Journal of Applied Animal Welfare Science, 3, 179-201.
http://dx.doi.org/10.1207/S15327604JAWS0303_1
[11] Patronek, G.J., Glickman, L.T., Beck, A.M., McCabe, G.P. and Ecker, C. (1996) Risk Factors for Relinquishment of Dogs to an Animal Shelter. Journal of the American Veterinary Medical Association, 209, 572-581.
[12] Patronek, G.J., Glickman, L.T., Beck, A.M., McCabe, G.P. and Ecker, C. (1996) Risk Factors for Relinquishment of Cats to an Animal Shelter. Journal of the American Veterinary Medical Association, 209, 582-588.
[13] Weiss, E., Dolan, E.D., Garrison, L., Hong, J. and Slater, M. (2013) Should Dogs and Cats Be Given as Gifts? Animals, 3, 995-1001. http://dx.doi.org/10.3390/ani3040995
[14] Toledo Area Humane Society (2011) About Us. https://www.toledohumane.org/about/7-about-us
[15] American Humane Association (2013) Keeping Pets (Dogs and Cats) in Homes: A Three-Phase Retention Study. Phase 2: Descriptive Study of Post-Adoption Retention in Six Shelters in Three US Cities. http://www.americanhumane.org/petsmart-keeping-pets-phase-ii.pdf