Designer ingredients elevate this Park Slope doggeria above other fast-food stops. One wall of the petite rectangular space bears a bright blue, orange and yellow hot-dog mural; diners can sit on cheddar-cheese-hued plastic chairs to nosh on a dizzying variety of tube steaks. On offer are as many as six types of dogs, among them the Mutt (all-beef franks with natural casing), the Best-in-Show (grass-fed beef), the Bird Dog (chicken or turkey) and the veggie-friendly Downward-Facing Dog (tofu), as well as a wealth of toppings and three bun choices. Desserts are decadent, but we think the sweetest thing about this place is the photo collection of rescued canines that lines its walls.