Companion Animal Health and Genetics is an open access journal focused on advancing the health and welfare of domesticated animals/pets by providing new clinical, genetic, and epidemiological insights. Companion Animal Health and Genetics accepts articles on the health and welfare of all companion animals, such as cats, dogs, horses, rodents, rabbits, birds, exotic pets, and fish. It welcomes clinical research articles, case reports, commentary, letters to the Editor, reviews, short reports on but not limited to the areas of internal medicine, emergency medicine and critical care, cardiology, oncology, neurology, dermatology, ophthalmology, pathology, diagnostic imaging, and clinical genetics. Additionally, the journal welcomes research on genetic and epidemiological studies that contribute to a better understanding of risk factors for diseases, disease patterns and the impact of breeding on animal health. Due to their relevance and close genetic link, these studies may also include wild ancestors of companion animals. We aim to provide guidelines for improving disease diagnostics, therapeutic interventions, and disease management strategies for policy makers, veterinarians, and pet breeders. Formerly known as Canine Genetics and Epidemiology/Canine Medicine and Genetics, this journal began with an emphasis on genetic and epidemiological research relating to breed diversity as well as clinical reports on canine diseases and is now expanded to include studies on all companion animals.