I copied this from somewhere else on FDMB (I think) and it might be useful, Juliet:
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Canned LC Foods - Canada
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In Canada, we actually have a good selection of grocery store brands that are low carb. Compliments (Sobeys/IGA) and President's Choice (SuperStore, LobLaws) foods are good choices. One big bonus is that the PC and Compliments cost less than FF, and several of them have better ingredients! There are several PC flavours that are low carb- like duck - which FF doesn't even carry. The WalMart and PC ones are in Janet's international charts, and the FF ones are in her old charts. Regardless, stick with pate ones - no gravies. The gravy ones are full of corn starch. If it's used, wheat gluten is listed on the labels in the ingredients, so it's easy to avoid those if you like.
The Compliments ones (Sobeys) also have really good pates. The ones you buy in a box (turkey and giblets, beef dinner, and mixed grill) are all pates and good to use.
Friskies also has some really good low carb pates, and it says "Pate" clearly on the label. My guys like turkey & giblets, chef's dinner, chicken dinner and - as a once a week treat only!- the salmon dinner or whitefish and tuna.
If they are not in Janet's list, the next best thing is to label read- avoid obvious grains (wheat, rice, corn) and other carbs (potatoes, peas), fruit & vegetables, and things called "food starch".. which I assume is cornstarch, but the "starch" part says "stay away" to a sugarcat.