I'm sorry I do not know. And what is the end result needed? Maybe this script will help? http://www.creativecrash.com/maya/script/polygon-edges-to-curve
Not sure about the triangle shading on the upper tail and upper front legs. It's supposed to polygonal, but you're losing some of the shape definition of your art style.
1 is actually the most expensive. since it requires alpha transparency. Polygons are much cheaper than the memory and overdraw issues caused by use of alpha transparency.
Should have put a few more triangles into the legs. From the upper view, the polygons are very noticeable at the end of the socks, and that's the view a player will see the most.
Very nice lines. You done a good job hiding the fact that this is CG. The less the player can tell they are surrounded by polygons, the better! Great work.
Or, may be, i have mistake with using smoothing groups, almoust all problem places are on the hard edges, places of contact polygons with different smoothing groups.