I wonder if you guys can give me some advice. Harley has almost entirely stopped eating her kibble. I feed Nutro lamb and rice. She was eating 3-4 c. a day, lately (last week or so) she's taking less - only about 1 c. No change in activity level, no noticeable weight loss. Should I be concerned, maybe change her food? The only scraps she gets are meat scraps after dinner (not a significant amount at all.) Often I even save them for training treats. What's going on?