Cold lasers are low-intensity lasers that are used as part of therapeutic treatment for pets - called cold laser therapy. During this treatment, light is concentrated over affected tissue for periods ranging from 8 to 30 minutes, depending on the issue being treated. Laser therapy works by emitting light that stimulates cells in a process called photo-biotherapy. Photo-biotherapy encourages cell metabolism and protein synthesis, improving cell strength. This drug-free and non-invasive treatment work to stimulate cells, reducing pain signals to nerves, increasing blood circulation, and releasing endorphins.