All mammals, birds, reptiles, amphibians, and fish (but not all fish) have internal skeleton.
any mammal has an internal skeleton but bugs have an exoskeleton
A worm
a internal skeleton of a vertebrate animal
molds
your mom is the biggEST ANIMAL alive
An invertebrate is an animal without an internal skeleton. Ants do not have an internal skeleton so they are invertebrates by definition.
The internal framework of an animal's body that provides support and protection.
A vertebrate is an animal that has an internal skeleton and a spine (backbone).
Any animal that has an internal skeleton and backbone is a vertebrate.
The word vertebrate means that the animal has an internal backbone and a skeleton.
A Vertebrate. An animal without an internal skeleton is called an Invertebrate.
Arthropods use external skeletons (exoskeletons).