Debra only modeled the donkey, I think.  She said the DAZ in-house modellers did the other two animals.

LMcLean, what version of Poser are you using?

Some advice, just in case you are a Poser newbie....

The bison figure comes in untextured.  You must use the provided MAT pose to apply the texture maps.  The texture, bump, and transparency maps add greatly to the realism. 

If you are using Poser 5 or 6, you may have to adjust the bump maps by hand.  They attach to the gradient node, or not at all, in P5/6.  They will be correct in PP. 

For posing...turn off Inverse Kinematics before you try posing.  (Figure -> Use Inverse Kinematics.   Uncheck everything.)