This article concerns domesticated organisms other than plants and animals, in these senses:
- Actual such organisms living under conditions of domestication
- Species, or larger formal or informal biological categories, that include at least some such domesticated individual organisms
(The term "outsider taxa" is intended to embrace both
- the two less familiar biological kingdomss that, with plants and animals, complete a biological taxonomic "domain" called eukaryotes, and
- the two other (and also less familiar) tentative "domains" that make up the prokaryotes.)