In today's drawing tutorial, we will be drawing Apatosaurus. Unlike Brachiosaurus which had a more massive chest, Apatosaurus had bigger back part. Its hind legs were also longer and more massive. Step 1. Outline the body of Apatosaurus with two circles. Step 2. Draw the body, legs, tail, and neck of Apatosaurus. Step 3. Finalizing the drawing of Apatosaurus. In the last step of our Apatosaurus drawing tutorial, hatch the body and legs of our dinosaur. Draw its toes.