During my old cocker's last 6 months, when he really needed a dental but we just couldn't risk it, he lived on those natural Balance logs. Know what I mean? Their density is somewhere between canned and kibble. And it must have been very enticing to smell - because he ate that with gusto. And i was worried about too much fat also but this got the vet's OK. just a thought.
You and Chase are in my thoughts and prayers Lindsay. Thanks for your hard work.