Eukaryotes are organisms with eukaryotic cells, and are grouped in the domain Eukarya, consisting of several kingdoms. These cells have a nucleus that houses the DNA and genetic information of the cell, as well as other membrane-bound structures called organelles. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers. In fact, Animalia is one of the kingdoms of Eukarya. Therefore, the monkey shown above is a clear representation of a eukaryote. Like other animals, this monkey is complex and is comprised of billions of cells that each contains organelles.