This is now the place we buy our dog Malik's food most often, and it's mostly a matter of convenience. This place is on my way home from work.
They always have her brand in stock (Wellness Super 5 Mix for Small Breeds - Adult Health - http://www.wellnesspetfood.com/product-details.aspx?pet=dog&pid=66), in both 4 lb. and 12 lb. bag sizes, which is very rare. I used to have to call around to different pet food stores about a week before we ran out of food to order/check supply of a big bag of her food. Now I can just show up here with confidence!
I also love the selection of treats and toys - in various sizes and prices, so I can choose a few different small/sample sizes of kinds of doggie snacks before investing in a big bag. The staff is extremely friendly and helpful, very knowledgeable about the different brands and health benefits, and they are all pet owners themselves, of course.
They are fantastic with Malik, who can be quite wary of strangers, and they always manage to slip her a treat or two while I'm busy shopping!
The lost star is because getting in & out of the parking lot can be a hassle. It's in the same little plaza as a garage, with cars constantly coming and going or cars parked all over the place. It's very challenging, especially during busy Bloor Street rush hour, but that's the only negative part of this wonderful Pet Valu location!