I have noticed my two new does digging a small hole in their pen, and eating something. I thought it was roots but I was watching them for awhile today and it looked like they were eating the dirt. I also unearthed an old t-post from their run (it used to be the dumping ground for the barn I think, this was about a foot down). The post was still in good shape, had some rusty colored dirt on it, and I tossed it out of their pen to use for something else. Yesterday I decided to use it to shore up a sagging post in their pen until I can get a new hole dug, and pour in some cement. Since i put up this post, the goats have been licking the dirt off of it. Is something missing in their diet? They get timothy hay, alfalfa hay cubes, and goat pellets, with some 'Sunshine Plus' as top dressing, and they have goat minerals (loose) and baking soda available. The goat minerals seem to be disappearing alot more lately, i just thought maybe they had finally figured out they can get it themselves (versus me offering it to them in my hand) I've only had them a little over a month, so i don't know if this is normal for them or not. My other goats never did this.