Galen, there have been hints for a couple of weeks about Scruff sleeping more, dozing happily next to Lyndi in the garden. He died peacefully, with her on Sunday evening (well, during the Sunday evening episode). It seems that Lyndi and Fallon may be forging a friendship, which can only be a Good Thing.
There are also hints from Robert, that financially things aren't as secure as they previously have been.
Alas, poor Scruff. I've always felt he could tell us a lot about the flood and what happened to Stephan.
In fact, until Scruff's return, I'd feared it was half his body that was above the feed at Berrow Farm, causing the illness amongst the cows. Such is my dislike of Rob, I'd believed he'd deliberately put half a dogs body above the feed to cause problems for Charlie.