Tub size depends on the size of dogs you typically groom and your available space. Our Poly Pet Tub comes in multiple configurations, including options with ramps and platforms for small dogs. As a rule of thumb, leave enough depth and backsplash height to keep water contained for larger, more active breeds. It's worth sizing up if your budget allows — choosing a tub too small to handle larger breeds means turning away business down the road, so it pays to plan for the clients you want to grow into, not just the ones you have today.