Lyrra - the mesh for the Poser horse has somewhat of the curve you are talking about, but the model is indeed lacking in overall musculature. I did the best I could with my current skills. But I do plan on modeling a horse from scratch in the not too distant future. I just have a little learning curve to climb first. =)

Daio, your foal is so cute!! Great job! Nice texture too.

Kacia