A reader asked why I "sack" Libby, and wondered what purpose there is in this activity of rubbing plastic bags (filled with cans rattling) against a horse's body repeatedly.
It's called "desensitizing" the horse. Rather than try to explain in my own words, I give you this link, which explains it well. In fact, that whole website, "Training Horses The Wal-Mart Way", looks like a good one! I discovered it just now, while googling up a good answer for my readers.
I keep forgetting about my intention to mention something for which I'm thankful at the end of each entry; sorry about that! Today I'm thankful for all the information I have right at my fingertips on the Internet.