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An invertebrate is an animal that does not have a backbone.
Ninety-seven percent of all animal species are invertebrates.
Invertebrates are classified into different groups, depending on their characteristics:
Invertebrates share four common traits:
An invertebrate is a species of animal which does not have a back bone, such as a spider, insects, lobsters and crabs. It is estimated that as much as 97% of all animal species are invertebrates. Below is some additional information and a selection of external resources on invertebrates.
Let's have a look to the different groups of invertebrates with this song:
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