Cold laser therapy is a noninvasive procedure that uses light to stimulate cell regeneration and increase blood circulation. Often called low-level laser therapy, cold laser therapy or Class IV laser therapy, by any name, is still a relatively new concept that is being used more recently to treat dogs with arthritis, tendon or soft tissue injuries and to promote wound healing. Laser therapy can treat acute and chronic injuries, sprains and strains, arthritis, swelling due to back disc problems, and muscular-skeletal abnormalities. It also helps to regenerate nerve tissue after surgery.