What Is a Novel Protein? Why Horse and Yak Treats Suit Sensitive Paws

What is a novel protein?

"Novel" does not describe a specific meat — it means new to that particular dog. Lamb is not novel for a dog that has eaten a lamb-based food for years. Whether a protein is novel depends on the dog's own diet history, so start by listing every food and treat your dog has had.

Which proteins most often trigger food allergies in dogs?

A review of the published literature on adverse food reactions in dogs found the most frequently reported sources were:

• Beef — 34%
• Dairy products — 17%
• Chicken — 15%
• Wheat — 13%

These ingredients are not inherently dangerous; they have simply been the most widely used in pet food for decades, so dogs are exposed to them most. That is why proteins rarely used in pet food — like horse and yak — are drawing attention.

Elimination diets and treats

Food allergy is confirmed with an elimination diet trial rather than a blood test: a novel or hydrolyzed protein diet is fed for at least eight weeks while symptoms are monitored. Treats must match that protein during the trial, or the result is muddied — which is why single-ingredient, single-protein treats matter.

Horse, lamb and yak compared

• Horse — rarely used in pet food. Belcher's signature line, with ten cuts from jerky to tendons, cartilage and organs.
• Lamb — mild and savory and fairly common, so it may not be novel for a dog already eating lamb-based food.
• Yak — a rare highland protein from the Mongolian steppe that few pet foods use.

Belcher's principles

Every Belcher treat is one raw ingredient — no gluten, colorants, artificial preservatives or chemical additives. Free-range Mongolian horse, lamb and yak are trimmed, washed, dried and packed in our own facility in Mongolia. The protein on the label is the only protein in the bag.