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Article History

Received: 12 July 2018

Accepted: 10 October 2018

First Online: 6 November 2018

Ethics approval and consent to participate

: Data was obtained under a data sharing contract. No live animals were used in this study and medical records were not examined. All transaction records were blinded as to the clinic identity, pet owner’s identity and home address.

: Not applicable.

: RL, RA and DN are employees of MSD Animal Health. KT is an employee of Merck & Co., Inc.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.