Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.
January 2000,
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association,