Dogs are kinda like people. They come in all shapes and sizes. Chester is larger than his breed standard, but I don’t think he's overweight. She looks fine to me in all the pics I've seen. If she looks and feels normal when you run your hands over her body, don’t worry. She could just be a bit large for her breed. I think I had the worlds record for smallest Westie. He was a lil itty-bitty thing.