Animals are multicellular, eukaryotic organisms comprising the biological kingdom Animalia (/ˌænɪˈmeɪliə/[4]). With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Animals form a clade, meaning that they arose from a single […]