Segmented
Identical or almost identical repeating body parts of an animal
Filter feeder
An animal that feeds by straining suspended food particles from water
Nematocyst
A tiny barbed spear found inside the stinging cells of some animals
Setae
Thin stiff bristles on the outside of some worms to help them move
Exoskeleton
A hard skeleton on the outside of some animals (crab shell)
Endoskeleton
Skeleton on the inside of some animals (backbones)
Appendage
A structure attached to the main body (legs,arms)
Bilateral symmetry
The body structures of the animal can be divided into two sides (a left and a right side) that are alike. Most animals have bilateral symmetry.
Radial symmetry
The body structures of the animal equally formed around a central point
Asymmetry
No definite shape (Porifera sponges only)
Invertebrate
An animal without a backbone (snails, insects, worms)
Vertebrate
An animal with a backbone (cats, birds, snakes, lizards)