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|image=Vulpes vulpes.jpg

|image=Vulpes vulpes.jpg

|kingdom=Animalia}}

|kingdom=Animalia}}

An '''animal''' is any creature which is a member of the [[Animalia]] kingdom. Animals must eat [[plant]]s or other organisms to survive. The plants are called "producers" and the animals are "consumers".  Animals have complex [[eukaryotic cell]]s, unlike bacteria which have much simpler [[prokaryote|prokaryotic]] cells. Animal cells do not have [[cell wall]]s, only structural [[protein]]s in the [[cell membrane]]; this allows the animal cell a degree of flexibility.

An '''animal''' is any creature which is a member of the [[Animalia]] kingdom, except [[human being]]s.  

 

Animals must eat [[plant]]s or other organisms to survive. The plants are called "producers" and the animals are "consumers".  Animals have complex [[eukaryotic cell]]s, unlike bacteria which have much simpler [[prokaryote|prokaryotic]] cells. Animal cells do not have [[cell wall]]s, only structural [[protein]]s in the [[cell membrane]]; this allows the animal cell a degree of flexibility.

The simplest of all animals are [[sponge]]s, which do not move.  Sponges have different cells for different tasks, but these cells are not organized further into [[tissue]]s or [[organ]]s.  Sponges also do not exhibit [[symmetry]], unlike all other animals.

The simplest of all animals are [[sponge]]s, which do not move.  Sponges have different cells for different tasks, but these cells are not organized further into [[tissue]]s or [[organ]]s.  Sponges also do not exhibit [[symmetry]], unlike all other animals.