There are two horse motion sequences on the Poser 4 content CD. However they are a walk and a trot in place. I have "faked" horizontal motion by copying the animation for one walk cycle and pasting it numerous times in the animation graph to get the length of animation I needed. Then I went into the animation graph and moved the horse so it appeared to be moving forward. The first few times I tried it it looked like the horse was skating. After working on it awhile I finally got it to look like it was actually walking. I used a box for the ground and a cobblestone texture to create a road. I haven't had any luck with using the walk designer with any four legged animals either. Hope this has helped a little.