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Crocodiles have an internal bony skeleton and a spine, so are vertebrates.
Mussels have a sort of exo-skeleton. Their shell.
A cheetah has an endoskeleton, which is an internal skeleton.
The boney kind.
Humans, cats, dogs, hamsters, armadillo, birds, tigers, crocodiles, a lot of mammals( i think all of them), etc -------------------------- Generically a vertebrate's skeleton.
The death roll.
internal
This is called an exoskeleton.
Crocodile eggs
in wet lands
a spine?
exoskeleton