Anyways, here's the original:
And here's my new, updated version:
I've hit the point where feedback would be much appreciated. Let me know what you guys think.
Update 1: I made the front legs bulkier and reduced the size of the back hips. The tails are also longer now and should be proportionally correct.
Old vs. New:
Update 2: I beefed up the mane a bit as suggested.
Old vs. New:
Edit: Added a poll for approval.