Red and near-infrared light therapy has become a popular at-home comfort tool for older dogs and pets recovering from minor strains, and the device market is crowded. We compared the most common pads, wraps, and handheld units, focusing on the wavelengths each one emits, how much area the light covers, and whether the design stays put on a moving dog. In our evaluation we leaned on manufacturer specifications, published wavelength ranges commonly cited for photobiomodulation, and aggregated owner feedback rather than running our own measured trials. What we recommend before anything else is a vet check. Light therapy is a supportive comfort tool, not a treatment for fractures, infections, or undiagnosed pain, so use this guide to choose a sensible device once your veterinarian has confirmed it is appropriate for your dog.

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