Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States

The objective of this study was to identify phenotypic characteristics predicting the outcome of euthanasia for dogs entering shelters compared to live release. Individual dog records for 2017 were requested from shelters in five states (Mississippi, Pennsylvania, Michigan, Colorado, and Oklahoma) r...

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Main Authors: Cassie J. Cain, Kimberly A. Woodruff, David R. Smith
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/11/4/927
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author Cassie J. Cain
Kimberly A. Woodruff
David R. Smith
author_facet Cassie J. Cain
Kimberly A. Woodruff
David R. Smith
author_sort Cassie J. Cain
collection DOAJ
description The objective of this study was to identify phenotypic characteristics predicting the outcome of euthanasia for dogs entering shelters compared to live release. Individual dog records for 2017 were requested from shelters in five states (Mississippi, Pennsylvania, Michigan, Colorado, and Oklahoma) receiving municipal funding and using electronic records. Duplicate dogs were removed and records from 17 shelters were merged into a dataset of 25,047 unique dogs with variables of breed, gender, coat color, size, age, region, and time in shelter. Only data from dogs with the potential to be adopted (<i>n</i> = 19,514) were analyzed. From these data, a simple random sample of 6200 dogs was used for modelling. Variables describing coat length, estimated adult size, and skull type were imputed from the breed description. A Cox proportional hazard model with a random effect of shelter was developed for the outcome of euthanasia using manual forward variable selection and significance for variable retention at alpha = 0.05. A size by geographic region interaction was associated with the hazard of euthanasia (<i>p</i> = 0.0204). Additionally, age group and skull type were both associated with euthanasia compared to live release (<i>p</i> < 0.0001). The results of this study indicate that phenotypic characteristics of dogs are predictive of their hazard for euthanasia in shelters.
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spelling doaj.art-74a0de10e8434ebb9f7933e968cbc6412023-11-21T11:55:29ZengMDPI AGAnimals2076-26152021-03-0111492710.3390/ani11040927Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United StatesCassie J. Cain0Kimberly A. Woodruff1David R. Smith2Department of Pathobiology and Population Medicine, Mississippi State University College of Veterinary Medicine, Mississippi State, MS 39762, USADepartment of Clinical Sciences, Mississippi State University College of Veterinary Medicine, Mississippi State, MS 39762, USADepartment of Pathobiology and Population Medicine, Mississippi State University College of Veterinary Medicine, Mississippi State, MS 39762, USAThe objective of this study was to identify phenotypic characteristics predicting the outcome of euthanasia for dogs entering shelters compared to live release. Individual dog records for 2017 were requested from shelters in five states (Mississippi, Pennsylvania, Michigan, Colorado, and Oklahoma) receiving municipal funding and using electronic records. Duplicate dogs were removed and records from 17 shelters were merged into a dataset of 25,047 unique dogs with variables of breed, gender, coat color, size, age, region, and time in shelter. Only data from dogs with the potential to be adopted (<i>n</i> = 19,514) were analyzed. From these data, a simple random sample of 6200 dogs was used for modelling. Variables describing coat length, estimated adult size, and skull type were imputed from the breed description. A Cox proportional hazard model with a random effect of shelter was developed for the outcome of euthanasia using manual forward variable selection and significance for variable retention at alpha = 0.05. A size by geographic region interaction was associated with the hazard of euthanasia (<i>p</i> = 0.0204). Additionally, age group and skull type were both associated with euthanasia compared to live release (<i>p</i> < 0.0001). The results of this study indicate that phenotypic characteristics of dogs are predictive of their hazard for euthanasia in shelters.https://www.mdpi.com/2076-2615/11/4/927animal sheltershelter dogseuthanasialive releaseUnited States
spellingShingle Cassie J. Cain
Kimberly A. Woodruff
David R. Smith
Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
Animals
animal shelter
shelter dogs
euthanasia
live release
United States
title Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
title_full Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
title_fullStr Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
title_full_unstemmed Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
title_short Factors Associated with Shelter Dog Euthanasia versus Live Release by Adoption or Transfer in the United States
title_sort factors associated with shelter dog euthanasia versus live release by adoption or transfer in the united states
topic animal shelter
shelter dogs
euthanasia
live release
United States
url https://www.mdpi.com/2076-2615/11/4/927
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AT kimberlyawoodruff factorsassociatedwithshelterdogeuthanasiaversuslivereleasebyadoptionortransferintheunitedstates
AT davidrsmith factorsassociatedwithshelterdogeuthanasiaversuslivereleasebyadoptionortransferintheunitedstates