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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Sample categories according to geographic areas defined in the study: Northern Sicily (NS), South Western Sicily (SWS), South Eastern Sicily (SES) and dogs’ population, shelter dogs (S) and owned dogs (O).