ABC - DEF - GHI - JKL - MNO - PQRS - TUV - WXYZ Languages: Invertebrate
Definition:
Any animal lacking an internal skeleton such as a backbone or spinal column. Examples of invertebrates include worms, insects, oysters, and crabs.
The group includes all animals except fish, reptiles, amphibians, birds and mammals.
Source: GreenFacts
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