*1: any of a kingdom (''Animalia'') of living things including many-celled [[organisms]] and often many of the single-celled ones (as protozoans) that typically differ from [[plants]] in having [[cells]] without cellulose walls, in lacking chlorophyll and the capacity for [http://en.wikipedia.org/wiki/photosynthesis], in requiring more complex [[food]] materials (as [http://en.wikipedia.org/wiki/proteins]), in being organized to a greater degree of [[complexity]], and in having the capacity for [[spontaneous]] movement and rapid motor [[responses]] to [[stimulation]] | *1: any of a kingdom (''Animalia'') of living things including many-celled [[organisms]] and often many of the single-celled ones (as protozoans) that typically differ from [[plants]] in having [[cells]] without cellulose walls, in lacking chlorophyll and the capacity for [http://en.wikipedia.org/wiki/photosynthesis], in requiring more complex [[food]] materials (as [http://en.wikipedia.org/wiki/proteins]), in being organized to a greater degree of [[complexity]], and in having the capacity for [[spontaneous]] movement and rapid motor [[responses]] to [[stimulation]] |