The Homedics battery-operated massager with 4 heads is the best one I’ve found for the massage technique I recommend in my video; it’s easy to accomplish and the vibration is doing a lot of the work. A lot of people have a similar massager with only 3 feet on it. The massage won’t be quite as evenly performed with 3 instead of 4 heads, but just getting it done with the mild vibration will be a huge benefit to your pet 🙂