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Because they have a spine.Every living animal which has a spine is a vertebrate. While those with no spines are invertebrates.All mammals are vertebrates (seals are mammals).
Yes, Hawaiian monk seals do have spines. They are just like other mammals that are vertebrates. In other words, they have backbones.
No, raccoons do not have spines. Porcupines have spines.
Yes people have spines.
Elephants do have spines.
they have spines. spines are vertebrates they are not invertebrates.
Yes. All mammals have spines.
All reptiles have spines.
they have the spines to protect them from your face
The pointy things on a cactus are called spines.
i think that they have 400 spines
All fish have spines. They are all vertebrates.