Yes.
Insects do not have bones, that is why some insects have exoskeletons.An insect doesn't have a backbone because it is not a vertebrate; it doesn't have an internal skeleton. Insects have an exoskeleton - the tough exterior of an insect is the 'skeleton'.
All mammals have an internal skeleton
Internal Skeleton
Yes it is.
internal skeleton
endo-skeleton
any mammal has an internal skeleton but bugs have an exoskeleton
Internal.
A cheetah has an endoskeleton, which is an internal skeleton.
The defining characteristic of a Vertebrate is an internal skeleton. Orangutans have an internal skeleton so they are vertebrates.
All mammals, birds, reptiles, amphibians, and fish (but not all fish) have internal skeleton.
internal