Are spiders invertebrates?


To qualify as invertebrates the animal must not have backbones or an internal skeleton.

Since spiders do not have backbones or internal skeletons (they have an exo-skeleton), they are invertebrates.

Only bony fish, amphibians, reptiles, birds, and mammals have backbones and are, therefore considered, vertebrates. The other 98% of all animals on earth, in terms of numbers of species types, are invertebrates.

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No, a spider is not considered to be an invertebrate. A spider is a part of the arachnid family.