I actually treck out to Dollard for it (woofers on sources-- they have almost every "more natural" food you can find) but "le croque en bol" has it too, and they have a few stores around Montreal.
I thought they were shiny before but now they're crazy shiny. I can't wait to see them when their full summer coat comes in (that coat is the shiniest). It's fun having black dogs- they probably would shine a bit anyway if they were on the crappiest food around.