Laser therapy uses specific wavelengths of light to penetrate the skin and stimulate the body's own natural healing processes at the cellular level.

The scientific name for this treatment - photobiomodulation (PBM) - tells the whole story: photo (light) + bio(life) + modulation (change).  It is the use of light to create positive change in living tissue.  The term “cold laser therapy” is commonly used, though, because it’s easier to say.

Unlike surgical lasers that cut tissue, “cold” lasers produce little to no heat and cause no damage. The word "cold" simply means the laser does not deliver energy intensely enough to harm the tissue it touches. Instead, it energizes and repairs.

How Does It Work?

Think of it like photosynthesis in plants. When a plant absorbs sunlight, it converts that light energy into chemical energy it can use to grow.  Cold laser therapy works on a similar principle inside your animal's cells.

When the laser light reaches the tissue, it is absorbed by special light-sensitive molecules inside the cells' mitochondria (the "powerhouses" of the cell). This absorption triggers a cascade of beneficial effects:

• More energy production - Cells produce more ATP (adenosine triphosphate), the fuel that powers all cellular repair and function.
• Reduced inflammation - The therapy helps calm the chemical signals that cause swelling and pain.
• Improved circulation - Blood flow to the treated area increases, delivering more oxygen and nutrients.
• Faster tissue repair - Cell reproduction and collagen production are stimulated, helping wounds and injuries heal more quickly.
• Pain relief - The treatment influences pain-signaling pathways and triggers the release of natural endorphins.

Most animals find cold laser comfortable and even relaxing - many dogs and cats will doze off during treatment. Sessions usually last anywhere from 2 to 20 minutes depending on the depth of the tissue that is being targeted and the size of the joint or area being treated.

What Animals Can Benefit?

Cold laser therapy is remarkably versatile. It is used across a wide range of species:

• Dogs and cats (the most common patients)
• Horses and large livestock
• Rabbits, guinea pigs, and other small mammals
• Birds and reptiles
• Exotic animals in zoo and wildlife settings

If your animal has living cells - and they all do - laser therapy has the potential to help them.

Conditions Commonly Treated

Pain and Arthritis

This is where cold laser therapy truly shines. Arthritis is one of the most common conditions affecting older dogs and cats, and the chronic pain it causes can dramatically reduce quality of life. Laser therapy helps reduce joint inflammation and stimulates the release of the body's natural pain-relieving chemicals. Many pet owners report seeing their arthritic animals moving more freely, climbing stairs again, or playing like they used to after a course of treatments.

Wound Healing

Whether it's a surgical incision, a bite wound, a hot spot, or a skin ulcer, laser therapy accelerates the healing process. It reduces the risk of infection by stimulating immune cells, encourages new tissue growth, and minimizes scar formation. This can be especially valuable for wounds that are slow to heal or are in difficult-to-bandage areas.

Muscle, Tendon, and Ligament Injuries

Sprains, strains, and soft tissue injuries are painful and can take a long time to heal on their own. Laser therapy helps these injuries recover faster by reducing swelling and promoting the regeneration of healthy tissue. It is widely used in equine sports medicine and canine rehabilitation after orthopedic surgery (such as cruciate ligament repair).

Nerve Damage and Neurological Conditions

There is growing evidence that photobiomodulation can support nerve regeneration and improve outcomes for animals with spinal cord injuries, degenerative myelopathy, or nerve damage from trauma. While it is not a cure for these serious conditions, it may slow progression and improve comfort and mobility.

Post-Surgical Recovery

Many veterinary clinics now offer laser therapy as a standard part of post-operative care. Treating a surgical site immediately after an operation can reduce swelling and pain, decrease the need for pain medications, and help the incision heal faster and with less scarring.

Ear Infections and Skin Conditions

Chronic ear infections, allergic skin conditions, lick granulomas, and other inflammatory skin problems can also respond well to laser therapy, reducing the inflammation and discomfort that makes these conditions so distressing for animals (and their owners).

Dental and Oral Health

Some veterinary dental practices use cold laser therapy to reduce inflammation and speed healing after tooth extractions or oral surgery, and to soothe painful conditions like stomatitis in cats.

Is It Safe?

Cold laser therapy has an excellent safety record and has been used in human physical therapy and veterinary medicine for decades. Because it works with the body's own biology rather than introducing foreign substances, the risk of side effects is very low.

A few important points:

• It is painless. Most animals show no distress during treatment; many visibly relax.
• Protective eyewear is worn by the veterinary staff during treatment, since direct exposure to the laser beam can harm the eyes. Your pet's eyes will also be protected if the treatment area is near the head.
• It should not be used directly over tumors, as increased cell stimulation could theoretically encourage cancer cell growth.

What to Expect: Frequency and Results

Laser therapy is rarely a one-and-done treatment. For acute (sudden) injuries, a short course of several sessions over a week or two may be sufficient. For chronic conditions like arthritis, an initial intensive phase of treatments is often followed by regular maintenance sessions - weekly, biweekly, or monthly, depending on your animal's needs and response.

Results vary depending on the condition being treated, the severity, and the individual animal. Some owners notice improvements after just one or two sessions. Others see gradual progress over several weeks. For chronic conditions, the goal is often long-term management and an improved quality of life rather than a complete cure.

How Does It Fit Into a Treatment Plan?

Cold laser therapy works best as part of a broader, integrated approach to your animal's health. It pairs especially well with:

• Physical rehabilitation and hydrotherapy
• Herbal and homeopathic medications
• Supplements (such as omega-3 fatty acids or joint supplements)
• Weight management (reducing load on arthritic joints)
• Acupuncture/chiropractic care
• Appropriate exercise programs

Think of it as one powerful tool in a toolbox - most effective when used alongside other good veterinary care.

Questions to Ask At Your Next Appointment

If you think your animal might benefit from cold laser therapy, here are some good questions to bring to your next appointment:

1. Is my pet a good candidate for laser therapy given their condition?
2. How many sessions would you recommend, and how often?
3. What results should I realistically hope to see, and over what timeframe?
4. Are there any risks or contraindications I should know about for my specific animal?
5. How does laser therapy fit alongside their current medications or treatments?

The Bottom Line

Cold laser therapy represents a genuine advancement in how we can care for our animal companions. It is safe, painless, non-invasive, and backed by a growing body of scientific research. For animals dealing with pain, injury, or slow healing, it can make a real and meaningful difference in their comfort and quality of life.

If your pet is struggling with arthritis, recovering from surgery, or dealing with a stubborn wound or injury, it is absolutely worth asking your veterinarian whether photobiomodulation could be part of their path back to feeling their best.