Well, after close to 2 months of babying Whisky's left rear leg (see http://www.sheltieforums.com/showthread.php?t=100 ), I called the vet since there was no real improvement. He confirmed Whisky would have to go under the knife, then would be recovering for 6-8 weeks. 
However, about a week after that, we started seeing progress. He started running again, his knee would only pop out partially, as he was able to keep walking on it, and after two steps, his leg would be back to normal.

Sure enough, his weight being down from 30lbs to about 26lbs surely helped.
He's now doing better everyday. I'm so glad. I only hope it doesn't start again next winter...

However, about a week after that, we started seeing progress. He started running again, his knee would only pop out partially, as he was able to keep walking on it, and after two steps, his leg would be back to normal.

Sure enough, his weight being down from 30lbs to about 26lbs surely helped.
He's now doing better everyday. I'm so glad. I only hope it doesn't start again next winter...




, until his weight goes down even further. I want him slim come winter time, to avoid a repeat of this.