About the Authors

Judith L. Stella

Contributed equally to this work with: Judith L. Stella, Amy E. Bauer, Candace C. Croney

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft

Judith.l.stella@aphis.usda.gov, jstella@purdue.edu

Affiliation USDA-APHIS, Purdue University, W. Lafayette, Indiana, United States of America

Amy E. Bauer

Contributed equally to this work with: Judith L. Stella, Amy E. Bauer, Candace C. Croney

Roles Investigation, Methodology, Writing – review & editing

Affiliation Departement of Comparative Pathobiology, Purdue University, W. Lafayette, Indiana, United States of America

Candace C. Croney

Contributed equally to this work with: Judith L. Stella, Amy E. Bauer, Candace C. Croney

Roles Funding acquisition, Project administration, Resources, Supervision, Writing – review & editing

Affiliation Departement of Comparative Pathobiology, Purdue University, W. Lafayette, Indiana, United States of America

Competing Interests

Funding was provided by commercial sources, the Pet Food Institute and World Pet Association. The funding sources did not have any involvement in the design or conduct of the study; collection, analysis, or interpretation of the data; writing or approval of the manuscript; or decision to submit the manuscript for publication. This does not alter our adherence to PLOS ONE policies on sharing data and materials.