If you live or work in the Lakeview/Wrigleyville neighborhood and have dogs or cats, don't miss this gem of a pet store just north of Wrigley Field. In the age of Petcos and PetSmarts, this store stands apart from the crowd. You'll almost always find the owners at work in the shop. They're friendly and eager to please. (I've found them wiling to ship things, special order, etc.) The store sells a great variety of toys, supplies and premium/super-premium food (none of those brands loaded with low-quality byproducts and fillers).
If you want your pet to eat food that's as high-quality as what you eat, you'll find it at a place like 4 Legs, not one of the chain pet stores. And if you like to spend your money at locally owned stores, 4 Legs is one of them.