Vector-borne and zoonotic diseases in dogs and cats are widely distributed throughout the world; however, their epidemiology and etiology varies depending on the specific climatic conditions, as well as the presence and abundance of vectorial agents. Climatic and ecological changes and globalization are now affecting the distribution and patterns of transmission vectors and, as a consequence, have introduced etiological agents that can potentially affect dogs, cats, and their owners. On the other hand, the patterns of the classical clinical signs of these diseases are changing; thus, their diagnosis may be challenging.This Special Issue is focused on vector-borne agents and diseases affecting dogs and cats with potential zoonosis and aims to disseminate knowledge on the current status of vector-borne diseases all around the world. For the effective control and prevention of these diseases, a thorough knowledge of the infectious agents, their vectors, and major hosts is required in every ecological region at both the national and regional levels.
