An update on novel taxa and revised taxonomic status of bacteria isolated from domestic companion and agricultural animals described in 2023.

With the proliferation of abundant bacterial genomic data comes the recognition of new organisms as well as a better understanding of the relatedness of known bacteria. Recognizing the associated taxonomic changes enhances communication and understanding about the significance of novel organisms and deeper understanding of known pathogens. This review addresses the addition of multiple gastrointestinal bacteria that form the normal microbiota in a variety of animals including honeybees as well as novel bacteria from domestic animals including an alpha-hemolytic species from guinea pigs, two spp. from cows and goats, a new species from cats, a thermophilic species from pigs, and the new genus in Family . Several revisions to the nomenclature also appeared in 2023 including the change of which causes anorexia and diarrhea in domestic rabbits, to comb. nov. and to .