It is the largest horse in the world. The photo posted on another website. This drawing was posted immediately after so readers of that website would already be familiar with the image.

Here's the dealio, Amelio. The Artist who draws in this style, Guillaume Azoulay, would use a dynamic horse, one that is running, not one that is standing, it must be moving, one with a wild mane and long luxurious tail, the musculature would be accentuated by line but not entirely realistically. The anatomy of the face would be technically incorrect. See examples of his early work, dancers and horses with oddly delineated musculature seemingly caught in a web.