Vertebrate breed of the taxon Equus caballus. A vertebrate breed is a group of vertebrate animals that share specific characteristics (such as traits, behavior, genetics) that distinguish it from other organisms of the same species, and/or for which cultural or geographical separation has led to the general acceptance of its separate identity. Breeds are formed through genetic isolation and either natural adaptation to the environment or selective breeding, or a combination of the two. [ https://orcid.org/0000-0002-4142-7153 https://orcid.org/0000-0002-5002-8648 ]