Nice job. However, it doesn't have a real sense of "weight"... I'd reccomend that the forelegs step rather inward, the current stance makes me think it's going to collapse on itself any minute now. For a sense of weight, look at how an Elephant walks... The whole body shudders when its feet hit the ground, and I don't mean skin jiggle, I mean it's like every joint recoils from the shock. The Bull Dragon from Reign of Fire did the same thing.

Remember, kids! Napalm is Nature's Toothpaste!