Received: 11 March 2021
Accepted: 8 October 2021
First Online: 19 November 2021
: This prospective study complied with all relevant guidelines related to the use of animals in research in Europe, incl. Directive 2010/63/EU.This prospective study was approved by the ethics committee of Complutense University.All dog owners signed an informed consent form before entering this prospective study.
: Iveta Becvarova and Hein Meyer are fully employed with Hill’s Pet Nutrition, Inc. The Complutense University of Madrid Veterinary School received a study grant from Hill’s Pet Nutrition, Inc. to support this study. Drs. Rollins and Werre received consultancy fees for their assistance with writing the manuscript and with the statistical analysis, respectively.