Clair Thunes, PhD

Clair Thunes, PhD, is an independent equine nutrition consultant who owns Summit Equine Nutrition, based in Sacramento, California. She works with owners/trainers and veterinarians across the United States and globally to take the guesswork out of feeding horses. Born in England, she earned her undergraduate degree at Edinburgh University, in Scotland, and her master’s and doctorate in nutrition at the University of California, Davis. Growing up, she competed in a wide array of disciplines and was an active member of the United Kingdom Pony Club. Today, she serves as the regional supervisor for the Sierra Pacific region of the United States Pony Clubs. As a nutritionist she works with all horses, from WEG competitors to Miniature Donkeys and everything in between.

Articles by Clair Thunes

Saving Horses From the Northern California Wildfires

As wildfires rage in California, owners in Sonoma County are working together to evacuate and care for horses. Read More

Fall Colic Prevention for Horses

Nutritionist Dr. Clair Thunes shares advice on how to reduce your horse's risk of colicking this fall. Read More

Keeping Rodents Out of Your Feed Room

Rats and mice spread disease and ruin horse feed. Learn how to reduce populations in your barn. Read More

Can Horses Eat Pumpkin?

Do you want a festive fall treat for your horse? Find out if pumpkin is a safe choice. Read More

Helping Old Horses Gain Weight Before Winter

Our nutrition expert offers care and feeding tips for a thin senior horse before the cold weather hits. Read More

A Beer for Our Horses

With Oktoberfest in full swing, we started to wonder: Is the racetrack tradition of giving horses beer a good idea? Read More

Feeding the Evacuated Horse

Our equine nutrition expert shares tips for feeding horses during natural disasters. Read More

Feeding and Riding the Lactating Mare

Learn about the nutritional requirements of a mare with a foal at her side as she gets started back into work. Read More

What Does My Weanling Need to Eat?

Our nutritionist offers advice on feeding foals both before and after they're weaned from their dams. Read More

Is a Probe Necessary to Test Horse Hay?

Find out why using a hay corer or probe offers the best sample collection for hay nutritional analysis. Read More

Don't Let Your Horse Hay Go Up In Flames

Learn how to avoid combustion and barn fire caused by your stored hay. Read More

Bugs in a Bag of Horse Feed

What should you do if you find unwelcome pests in your horse's grain? Our nutritionist weighs in. Read More

Late-Cut Hay Questions

The weather can halt early season hay production. Here's what to remember if you only have access to late-cut hay. Read More

Avoiding Dehydration in Sport Horses During Summer

Keeping competition horses well-hydrated isn't always easy. Our nutritionist offers tips to help prevent dehydration. Read More

A Look at Pony Club's Feeding Rules

Our nutrition expert, who's also a USPC regional supervisor, shares the basic nutrition rules every Pony Clubber learns. Read More

How to Get a Horse to Drink When Away From Home

Find out why some horses won't consume water away from home and learn how to keep him hydrated. Read More

Nutrition Tips for Traveling With Your Horse

Travel stress can lead to gastric ulcers and colic. Use these strategies to help keep your horse healthy away from home. Read More

Improving Dry Equine Skin and Coats With Nutrition

Do you have a horse with flaky skin and a dry mane and tail? The right feed might help. Read More

Anhidrosis in Horses

Our equine nutritionist and physiology expert offers advice on managing horses that have stopped sweating. Read More

Is There a 'Right Kind of Salt' for Horses?

An equine nutritionist addresses the different types of salt available and how to pick the right one. Read More

Algae in Horse Water Troughs: Is It Safe?

Our nutrition expert offers tips for keeping algal blooms to a minimum in your horse's water trough this summer. Read More

Feeding PPID Horses

Our nutrition expert explains how diet changes can help horses with pituitary pars intermedia dysfunction (PPID). Read More

Nutrition and the Equine Topline

Find out how proper nutrition, including high-quality protein, could help improve muscling over your horse's back. Read More

How to Introduce and Use a Grazing Muzzle for Horses

An equine nutritionist offers tips for reducing your horse's pasture intake with a grazing muzzle. Read More

Senior Equine Feeds and Fiber

Our equine nutritionist explains why senior feeds are high in fiber and why that's good for your older horses. Read More