This rabbit hole seems to keep going. It may be old news but it’s still unclear.
It affects a lot more brands than the FDA press release, full FDA list of brands used by dogs with DCM:
Hills, EVO, Rachael Ray Nutrish, Merrick, Earthborn Holistic, Natures Variety, California Natural, Zignature, Acana, Taste of the Wild, Kirkland Signature, Blue Buffalo, 4health GF, Halo, Purina One, Victor Hi Pro, Orijen, Fromm, Natural Balance, Go, Fromm, Nutrisource, Acana, Nutro, Canidae, Diamond Naturals, Whole Earth Farms, Abound Natural, Wellness CORE, Petcurean, Castor and Pollux, Authority, Honest Kitchen, Weruva, Eagle Pack, Blue Wilderness,, Instinct, Farmina, Pine Forest, Pinnacle, Primal Raw, Iams, Royal Canin, Sportmix, ProPac, Purina Grain Free, Nutro Max, Freshpet, Holistic Select, Redford Naturals
Also, it does not just affect grain free, also, DCM affects dogs fed on a RAW diet.
DCM Diagnosed Dogs North Carolina State University 2015 – 2017
22 dogs – grain-free pet food
29 dogs – grain-based pet food
Reported cases of dogs not genetically predisposed to DCM disproportionately affected Golden Retrievers, mixed breed and Labrador retrievers; with only 19 cases reported for GSD between 2018-2019.
There is some suggestion that taurine levels are the culprit as pea and lentil protein may affect production of taurine, but it has also been found that some dogs who developed DCM also had acceptable taurine when tested so supplements may or may not help.
I think the takeaway is this is all circumstantial evidence, but as Verachi said, it may be better to be safe than sorry. If your dog can’t tolerate grains and they are happy on their diets there’s no conclusive evidence to suggest they are at risk but it may be a good idea to supplement taurine just in case.
I think personally, the evidence is fairly weak for causation, and if I was reading a study for work that was this weak it would be dismissed easily. However, it is harder to be so blasé when it comes to our pets that we love. Our pup appeared to not tolerate grains but she was young so we will be looking for some new brands that do not use too many lentils or peas and see if we can find her something that works for her.
Wellness LBP grain free actually fortifies it’s kibble with additional taurine that seems like a good precaution. If she cannot tolerate grains, we may stick with this.
Acana, although heavy in meat content deceptively practises ingredient splitting hiding the fact lentils and pea protein make up a large amount of their kibble, so I’m really not sure about it anymore. We’ll see how she gets on with it and if she does really well on it may consider adding a taurine supplement to be safe.
Sorry if this has all been discussed somewhere else but these are just my thoughts…