Dr Firth first reviewed my Yorkshire Terrier in 2008 as a puppy. She has medial patellar luxation, as well as a back that tends to roach. With his care to now (2026), Simba has led a pain free, joyful and healthy life. She is fit, full of energy, and always delighted when Marvin gives her manipulation and laser therapy. Marvin is an extraordinary physiotherapist for physical challenges of all breeds of dogs, and my dog has benefitted immensely from his care.