This is a reskin of the heavy horse model loosely based on Mesopotamian images of dragons and bulls.
Please don't kick me too hard - it's my first try.
Just add the hakpack to a module and create a new creature with the "Dragon Horse" appearance, add any properties you want.
In appearance.2da line 307 refers to the "dragon horse" in question, so you can take that line to include it to your version of the appearance file.
Feel free to modify the horsie, just notify me please.
I'm also open to constructive suggestions.
Hope you'll find it visually enjoyable.