any mammal has an internal skeleton but bugs have an exoskeleton
A Vertebrate. An animal without an internal skeleton is called an Invertebrate.
a internal skeleton of a vertebrate animal
A worm
All mammals, birds, reptiles, amphibians, and fish (but not all fish) have internal skeleton.
Any animal with an internal skeleton and backbone is called a vertebrate. It's the definition of the word.
The internal bony structure is called an "endoskeleton", in contrast to a rigid shell on the outside of the animal, normally made of chitin.Animals that possess these structures are known as vertebrate animals.
molds
they would be called mamals, examples: humans,cats,dogs,horses,and pigs
your mom is the biggEST ANIMAL alive
endoskeleton
(dovertebrates ) an animal without a penis or internal skeleton is called an dovertebrate an animal with backbone or internal skeleton is called a novertebrate