I have a two year old female chin and I've had her for a few months. After getting her I tried a few brands of hay until I tried Oxbow. She absolutely loved it and ate it like crazy. Problem is, the past few days she won't eat hardly any hay. Almost (if not all) of the hay that she's taken from her hanging ball hay holder is just scattered on the platform underneath it. I put fresh hay in it daily, but she just scatters it. She eats her pellets fine though. What should I do? Should I try another brand or could something be physically wrong?