Rowan A, Kartal T. Dog population & dog sheltering trends in the United States of America. Animals (Basel). 2018;8(5):68.
Herzog H. The puzzling geography of animal shelter dog euthanasia. Psychology Today. Accessed May 20, 2020. https://www.psychologytoday.com/us/blog/animals-and-us/201805/the-puzzling-geography-animal-shelter-dog-euthanasia
National Federation of Humane Societies Metrics and Measurement Committee. What is your rate? Understanding the Asilomar Live Release Rate, ASPCA Live Release Rate and Save Rate. The National Federation of Humane Societies. Accessed June 9, 2020. https://aspcapro.org/sites/default/files/What%20is%20your%20Rate%2010_2013.pdf
Zawistowski S, Morris J, Salman MD, Ruch-Gallie R. Population dynamics, overpopulation, and the welfare of companion animals: new insights on old and new data. J Appl Anim Welf Sci. 1998;1(3):193–206.
Lord LK, Wittum TE, Ferketich AK, Funk JA, Rajala-Schultz P, Kauffman RM. Demographic trends for animal care and control agencies in Ohio from 1996 to 2004. J Am Vet Med Assoc. 2006;229(1):48–54.
White SC, Jefferson E, Levy JK. Impact of publicly sponsored neutering programs on animal population dynamics at animal shelters: the New Hampshire and Austin experiences. J Appl Anim Welf Sci. 2010;13(3):191–212.
Morris KN, Gies DL. Trends in intake and outcome data for animal shelters in a large US metropolitan area, 1989 to 2010. J Appl Anim Welf Sci. 2014;17(1):59–72.
Morris KN, Wolf JL, Gies DL. Trends in intake and outcome data for animal shelters in Colorado, 2000–2007. J Am Vet Med Assoc. 2011;238(3):329–336.
Hawes SM, Camacho BA, Tedeschi P, Morris KN. Temporal trends in intake and outcome data for animal shelter and rescue facilities in Colorado from 2000 through 2015. J Am Vet Med Assoc. 2019;254(3):363–372.
Patronek GJ, Crowe A. Factors associated with high live release for dogs at a large, open-admission, municipal shelter. Animals (Basel). 2018;8(4):45.
Drake J, Wiseman S. Increasing incidence of Dirofilaria immitis in dogs in USA with focus on the southeast region 2013–2016. Parasit Vectors. 2018;11(1):39.
Animal relocation. American Society for the Prevention of Cruelty to Animals. Accessed May 21, 2020. https://www.aspca.org/animal-placement/animal-relocation
Companion Animal Parasite Council. Parasite prevalence maps. Pets and Parasites. Accessed May 20, 2020. https://www.petsandparasites.org/parasite-prevalence-maps/#/
Drake J, Parrish RS. Dog importation and changes in heartworm prevalence in Colorado 2013–2017. Parasit Vectors. 2019;12(1):207.
Brown HE, Harrington LC, Kaufman PE, et al. Key factors influencing canine heartworm, Dirofilaria immitis, in the United States. Parasit Vectors. 2012;5:245.
Aziz M, Janeczko S, Gupta M. Infectious disease prevalence and factors associated with upper respiratory infection in cats following relocation. Animals (Basel). 2018;8(6):91.
Miller GS, Slater MR, Weiss E. Effects of a geographically-targeted intervention and creative outreach to reduce shelter intake in Portland, Oregon. Open J Anim Sci. 2014;4(4):165–174.
Johnson KL, Cicirelli J. Study of the effect on shelter cat intakes and euthanasia from a shelter neuter return project of 10,080 cats from March 2010 to June 2014. PeerJ. 2014;2:e646.
Levy JK, Isaza NM, Scott KC. Effect of high-impact targeted trap-neuter-return and adoption of community cats on cat intake to a shelter. Vet J. 2014;201(3):269–274.
Spehar DD, Wolf PJ. Integrated return-to-field and targeted trap-neuter-vaccinate-return programs result in reductions of feline intake and euthanasia at six municipal animal shelters. Front Vet Sci. 2019;6:77.
Scarlett J, Johnston N. Impact of a subsidized spay neuter clinic on impoundments and euthanasia in a community shelter and on service and complaint calls to animal control. J Appl Anim Welf Sci. 2012;15(1):53–69.
Kass PH, Johnson KL, Weng HY. Evaluation of animal control measures on pet demographics in Santa Clara County, California, 1993–2006. PeerJ. 2013;1:e18.
Mueller MK, Chubb S, Wolfus G, McCobb E. Assessment of canine health and preventative care outcomes of a community medicine program. Prev Vet Med. 2018;157:44–49.
Benka VA, McCobb E. Characteristics of cats sterilized through a subsidized, reduced-cost spay-neuter program in Massachusetts and of owners who had cats sterilized through this program. J Am Vet Med Assoc. 2016;249(5):490–498.
Decker Sparks JL, Camacho B, Tedeschi P, Morris KN. Race and ethnicity are not primary determinants in utilizing veterinary services in underserved communities in the United States. J Appl Anim Welf Sci. 2018;21(2):120–129.
Dolan ED, Scotto J, Slater M, Weiss E. Risk factors for dog relinquishment to a Los Angeles municipal animal shelter. Animals (Basel). 2015;5(4):1311–1328.
Weiss E, Gramann S, Spain CV, et al. Goodbye to a good friend: an exploration of the re-homing of cats and dogs in the US. Open J Anim Sci. 2015;5(4):435–456.
Colorado Department of Agriculture Inspection & Consumer Services Division. Rules pertaining to the administration and enforcement of the Pet Animal Care and Facilities Act. Colorado Department of Agriculture. Accessed June 8, 2021. https://ag.colorado.gov/sites/ag/files/documents/1202–15%20for%20Website.pdf
Colorado Department of Agriculture Inspection & Consumer Services Division. 2019 PACFA reporting definitions. Colorado Department of Agriculture. Accessed May 27, 2020. https://colorado.gov/pacific/sites/default/files/2019%20-%20PACFA%20Shelter%20and%20Rescue%20Definitions%20-%20December%202019.pdf
PACFA. Colorado Department of Agriculture. Accessed Jun 9, 2020. https://colorado.gov/pacific/aginspection/pacfa
Colorado Department of Local Affairs. Population totals for Colorado and sub-state regions. Colorado Official State Web Portal. Accessed February 11, 2020. https://demography.dola.colorado.gov/population/population-totals-colorado-substate/#population-totals-for-colorado-and-sub-state-regions
Miller L. Animal sheltering in the United States: yesterday, today, and tomorrow. Vet Med. 2007;102:656–663.
Animal shelter euthanasia. American Humane. Accessed April 20, 2020. https://www.americanhumane.org/fact-sheet/animal-shelter-euthanasia-2/
Rowan AN. Companion animal statistics in the USA. Demography and Statistics for Companion Animal Populations Collection, 7. WBI Studies Repositories. Accessed July 22, 2020. https://www.wellbeingintlstudiesrepository.org/demscapop/7
Shelter Animals Count. Accessed December 4, 2020. https://www.shelteranimalscount.org
Annual report 2018. Shelter Animals Count. Accessed December 4, 2020. https://www.shelteranimalscount.s3.us-east-2.amazonaws.com/Shelter_Animals_Count_2018_Annual_Report_2031bd60e8.pdf
animal sheltering statistics. Shelter Animals Count. Accessed December 4, 2020. https://www.shelteranimalscount.org/data-reports
Data Dashboards National Map. Shelter Animals Count. Accessed May 20, 2020. https://www.shelteranimalscount.org/data/Explore-the-Data
Animal surrender and alternatives. Colorado Animal Rescue. Accessed June 21, 2021 https://www.coloradoanimalrescue.org/services/animal-surrender-alternatives/
Kass PH, New JC Jr, Scarlett JM, Salman MD. Understanding animal companion surplus in the United States: relinquishment of nonadoptables to animal shelters for euthanasia. J Appl Anim Welf Sci. 2001;4(4):237–248.
Simmons KE, Hoffman CL. Dogs on the move: factors impacting animal shelter and rescue organizations’ decisions to accept dogs from distant locations. Animals (Basel). 2016;6(2):11.
Fagre A, Olea-Popelka F, Ruch-Gallie R. Intake procedures in Colorado animal shelters. Animals (Basel). 2017;7(5):38.
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To investigate trends in animal shelter and rescue organization intake for dogs and cats in Colorado from 2008 to 2018.
482 animal shelters and rescue organizations that reported annual intake data to the State of Colorado Department of Agriculture for 1,086,630 dogs and 702,333 cats.
Total intake, intake for each of 5 Pet Animal Care and Facilities Act categories (stray, owner surrender, intrastate transfer, interstate transfer, or other), and community-based intake (total intake after exclusion of transfers) of dogs and cats were assessed in total and for each organization type (shelter or rescue organization). The number taken in per year, number taken in/1,000 capita (human residents)/y, and number in each intake category as a percentage of total intake for the same species per year were analyzed with linear regression models.
Trend lines indicated that total dog intake increased over the study period, but there was no change when these data were adjusted for the human population. Cat intake decreased over time according to both of these measures. Total community-based intake decreased, whereas total intake by interstate transfer from other organizations increased for both species during the study period.
Increased transfer of dogs and cats across state lines into regions with low community-based shelter intake suggested that regional and national animal disease trends could potentially impact disease profiles for recipient areas. Findings supported efforts toward collecting animal shelter and rescue organization intake and outcome data across larger systems.