Sorry, perhaps I phrased it wrongly. I think it's a good brand for most especially on the grain free diet thing that's popular now(correct me if I'm wrong).
However my shihtzu dislike its smell. It does smells terrible and quite off putting ( I also bought the ocean formula ones). Her stool was also alot darker in colour, almost black and didn't look erm..normal to me? Seems abit dry too. Also she started to smell abit sourish on this diet - she sleeps with me, so I do notice if there's a change in smell. For some reason as well, her rashes came back and ear infections started again too --> these are mostly caused by PH imbalance sometimes which makes their skin/ear canal an awesome breeding ground for bacteria. and Food largely affects their skin PH balance directly - again, correct me if I'm wrong but this is just my understanding from research and constant hounding on my vet's door. The problem went away as soon as I switch her out of it - so i deduced it to that there is something in the Wellness kibbles that's an allergen to her. I have also read on a few forums and reviews where other owners had almost similar problems. Hence, my initial advise for u to read up as your pet seems to be having problem related to eating her stools.

Wellness is abit high on protein as well, which was another reason I went off it, I know my fat girl won't exercise it out
That being said, IMHO any food can be given a 6 stars premium rating or so(alot of these are marketing ploys) the most important thing is to actually understand your pet's needs and find the suitable diet for them. My current rule of thumb had always been, if even I don't want to put it in my mouth, i won't feed it to them. I have in fact, taken a bite out of most kibbles that I've purchased. But that's just me. and just FYI, there are difference in taste between the RM30 and RM80 per bag ones. Hahaha.
Also, don't give them vitagen! additives, flavoring and sugar - even the white "original" flavour ones! Yakult is fine, recommended before by my vet. There's another korean brand too, also one of these cultured drinks which is supposedly natural, no sugar and all that jazz. Comes in a small lil bottle like yakult but its in blue - most korean groceries shop has them. Taste terrible though, coz got no sugar.
You should also consider cottage cheese! Almost the same kinda nutrients by lower lactose content compared to yogurt.
Dog kibble does affect the skin PH that will make their skin become a breeding skin for bacteria? First time I heard this, learnt new lnowledge today =)
Btw, I'm quite happy that today when I came bec home from work, I say my girl's stool still inside her toilet tray, which mean she didn't eat her stool
Btw, may I know what kibble u feeding ur shih tzu now? Perhap I will changemy girl's kibble next time, instead of wellness core, will change to Tast of Thw Wild + Go duck formula =)