Arthropods

[Lizzy Liz]

a type of animal with no spine , a hard outer skin, legs with bones joined together, and a body divided into different parts, for example a spider , crab , or ant

[Gregory]

a member of a group of animals with no spine (= bone down the center of the back) , a hard outer skin, legs with bones joined together, and a body divided into sections, for example a spider, crab, or ant