The French magazine "VETLIFE", in the November / December dossier "Special obesity", deepens osteoarthritis: a very common disease among overweight dogs and cats, as confirmed by the case of Titus, "obese" Labrador that lives with this problem. To improve the patient’s quality of life, physiotherapy has a prominent role: combining different techniques, is able to get good results in the treatment of osteoarthritis. Particularly effective is the Laser Therapy that, thanks to its analgesic, anti-inflammatory and bio-stimulating effect «can be used in daily practice also to treat all those diseases that have pain, inflammation, edema or ulceration as symptoms». Thanks to its characteristics, MLS® can support veterinarians in the treatment of problems commonly spread in companion animals, as confirmed by the image used in the article in which Laser Therapy is applied to the cat Harold for its polyarthritis.