Snack Time for Family Dog

My husband was gone for two weeks, home for two days, and gone for another week.  At the beginning of this travel stint, I purchased a 1,000 pc. puzzle for us to do at night (vs. watching television).  Normally, I find jigsaw puzzles relaxing.  I was getting close to done, and moved to the final stage of puzzle assemby.  I turned all of the pieces facing up, sorted, and organized these pieces in small rows.  See photo below.  After my husband got home, I noticed several of a particular kind of piece were missing.  I initially thought my husband took a small handful just to stir things up a little.

 

Much to my surprise, my dog has been snacking on pieces--presumably one at a time since she did not mess up my lines.  The kids and I have caught her holding these pieces in her mouth about a half dozen times in the past 24 hours.  The picture on the right is the "completed" puzzle.  Obviously she had been snacking much more than I suspected--about fifty pieces worth.  Wonder about the calories?