Which of these animals has its skeleton on the outside body ant horse or fish?

Here's why:

* Ants are insects, and insects have an exoskeleton. This means their skeleton is on the outside of their body, made of a hard, protective shell called chitin.

* Horses and fish have endoskeletons. This means their skeletons are on the inside of their body, made of bone (in horses) or cartilage (in fish).