After I sculpt in Zbrush, I brought my model to 3DS max. I worked with Biped and physique modifier to set pose two fighting hippos. After setting pose, I moved it to Zbrush again for final sculpt. And then I had final shot from Zbrush and then finished texturing and environment painting in Photoshop.
At final posing steps, I worked with 3ds Max because I was not familiar with using pose master in Zbrush.