Peregrine Equine

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Peregrine Equine

Peregrine Equine is owned and operated by Dr. Courtney Lewis and is based in Sonoma County.

20/11/2025

Back pain in horses is a common issue that can have many contributing factors, including saddle fit, biomechanics, fitness, and training. Conditioning the horse appropriately helps protect the back.

Signs to watch for include:

-Abnormal response to back pressure (grooming, tacking, mounting, etc.)
-Short-strided gait
-Girthiness
-Behavioral changes (rearing, bucking, etc.)
-Reluctance to engage the hindquarters

Addressing back pain promptly allows horses to recover faster, reduces treatment time and costs, and supports long-term comfort, soundness, and performance. Horses are naturally stoic, so subtle signs can easily be missed. Regular performance exams help catch issues early.

19/11/2025

Selenium is a trace mineral your horse needs in very small amounts, but it is important for antioxidant defense, immune function, thyroid hormone production, and may even have anticarcinogenic effects. Many horses are at risk of selenium deficiency due to regional soil conditions and limited access to lush green pastures.

Most commercial feeds and ration balancers provide adequate selenium when fed as directed. Exercise caution when supplementing, excessive selenium can be toxic.

Horse owners in Northern California should be proactive in preventing vitamin E and selenium deficiencies, as the functions are intricately linked. Dr. Courtney can help determine your horse's individual risk and whether testing and supplementation are recommended.

13/11/2025

Beyond its antioxidant role, vitamin E plays an important part in supporting immune, cardiovascular, circulatory, neuromuscular, and reproductive health.

The chemical structures of natural and synthetic vitamin E differ, and research has shown that their potency varies accordingly. Kentucky Equine Research found that synthetic vitamin E was ineffective at increasing blood levels, while the natural acetate form (d-alpha-tocopheryl acetate, a powder) and the natural alcohol form (d-alpha-tocopherol, a liquid) were both effective, with the liquid form providing the strongest response. Natural vitamin E products are available in different formulations. Water-dispersible liquid products, such as Nano-E, offer improved bioavailability.

For horses that do not have access to fresh pasture year-round, vitamin E supplementation may be necessary. Serum alpha-tocopherol concentrations should be measured periodically, and if levels do not rise as expected, the dosage or formulation should be adjusted. Vitamin E use should always be done under the guidance of your veterinarian, as excessive supplementation can be toxic.

📸: KER

12/11/2025

Happy Veterans Day!

06/11/2025

Vitamin E and selenium are important nutrients for horses, supporting muscle function, immune health, and overall well-being. However, in Northern California, many horses are at risk of deficiency due to regional soil conditions and limited access to lush green pasture.

Before adding a supplement to your horse’s diet, consult with Dr. Courtney about testing to obtain accurate information on your horse’s current status. If supplementation is needed, it’s a good idea to work with an equine nutritionist to ensure your horse is receiving a high-quality, bioavailable source while minimizing the risk of oversupplementation.

04/11/2025

Congratulations to Ellie and Mighty Quen on winning the Onondarka out of a huge group !

📸

01/11/2025

Happy Halloween, we can’t wait to see your costumes!

30/10/2025

Changes in the weather in the fall and winter seasons can decrease the amount of grass pasture available to horses, which can lead them to eat plants that they normally wouldn’t. Listed in the graphic are some of the plants that are toxic to horses and their clinical signs to watch out for.

If you suspect that your horse may have ingested one of these toxic plants or notice any of these clinical signs, contact your veterinarian immediately so that they are able to further evaluate your equine companion.

Thank you to the Horse Owner Education Committee for providing this valuable resource.

28/10/2025

Fall vaccines are in full swing, don’t forget your horse’s passport!

All horses competing under FEI regulations must have their vaccinations recorded in the FEI HorseApp at the time of vaccination. Dr. Courtney is required to enter this information during the appointment.

Let us know when scheduling if your horse is FEI registered and any upcoming plans to show. This helps to ensure your horse remains compliant with rules and allows for a smooth, efficient vet visit.

24/10/2025

Early recognition and appropriate treatment are vital when it comes to eye injuries. Notify your veterinarian immediately if your horse is exhibiting signs of eye pain or trauma. Symptoms can vary but may include:

- Excessive squinting
- Tearing
- Discharge
- Swelling
- Lacerations
- Redness
- Cloudiness
- Light sensitivity
- Rubbing eye against objects

If you suspect an issue with your horse’s eye, remember that early detection and veterinary attention will help ensure the best possible outcome. Never apply medication or ointments to an injured eye unless prescribed by your veterinarian. When it comes to treating eyes, what helps in some cases could make things worse in others.

21/10/2025

Costume class at SHP Halloween Harvest Festival with 😍

09/10/2025

It’s almost here!

We’re proud sponsors of the incredible
fundraiser for Wild Heart Restart Ranch, a sanctuary for mustangs, off-the-track Thoroughbreds, and any soul in need of a fresh start.

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Opening Hours

Monday	09:00 - 17:00
Tuesday	09:00 - 17:00
Wednesday	09:00 - 17:00
Thursday	09:00 - 17:00

Telephone

+14152543112

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