All mammals have an internal skeleton
endo-skeleton
Internal Skeleton
Yes it is.
internal skeleton
any mammal has an internal skeleton but bugs have an exoskeleton
Internal.
Crickets have an exo skeleton mostly made up of chiton. Humans have endo skeletons made of calcium carbonate.
A cheetah has an endoskeleton, which is an internal skeleton.
internal
All mammals, birds, reptiles, amphibians, and fish (but not all fish) have internal skeleton.
The defining characteristic of a Vertebrate is an internal skeleton. Orangutans have an internal skeleton so they are vertebrates.