A species is a group of living organisms that can interbreed and produce fertile offspring. Members of the same species share common characteristics and genetic traits, which distinguish them from other groups. For example, dogs and cats are different species because they cannot produce offspring together. Species are classified using a system called taxonomy, which organizes them into categories based on shared features. The scientific name of a species consists of two parts: the genus name and the species identifier. For instance, the domestic cat is classified as Felis catus, where Felis is the genus and catus is the specific species name.