That is what Creature Forge is all about. It's a fun and easy to follow course that teaches you how to turn a creature concept art into a fully animatable 3D creature. At the end, you will even learn how to add it to a 3D scene and create a fun looping animation, which you can share with the world.
In the course we'll go through; sculpting your model with high resolution detail, texturing, shading, rigging with the free Rigify add-on (to make this process extra fun), setting up an environment and crafting a fun looping animation, all in one accessible course.
By the end of the course, you know how to bring any 3D sculpted creature to life.

Homepage

https://www.cgboost.com/courses/creature-forge