Nulo Frontrunner Ancient Grains High-Protein Dog Food - Beef, Barley

In this review of Nulo Frontrunner Ancient Grains Beef, Barley & Lamb, the bottom line is simple: this dry dog food is best for adult dogs that benefit from a high-meat, lower-carbohydrate diet and owners who want natural ingredients and probiotic support. The formula stands out for delivering a very high portion of animal-based protein while using low-glycemic ancient grains like barley and oats, so it suits active dogs that need sustained energy without reliance on pea or potato proteins. For owners focused on digestion and coat health, the added probiotics, taurine, and omegas are the single biggest reasons to consider this bag.

Key Features

• High animal protein: The recipe provides a high-protein, low-carb kibble formulation with most protein coming from meat sources to support lean muscles and energy.
• Ancient grains: Low-glycemic barley and oats act as whole-food carbohydrates to support sustained energy and help manage blood sugar swings between meals.
• Digestive support: Formulated with BC30 probiotics and natural fiber to promote gut balance and more consistent digestion.
• Skin and heart nutrients: Includes taurine and omega-3 and -6 fatty acids to support heart health, brain function, and a shiny coat.
• Clean ingredient profile: Made without corn, potatoes, soy, or legumes and contains no artificial preservatives for a more natural dry food option.

Who It's For

This recipe is aimed at owners of adult dogs of all breeds who want a meat-forward, grain-inclusive kibble that supports active lifestyles and digestive health. It works well for dogs that respond poorly to legume-based proteins or to recipes with higher starches like potatoes.

Owners seeking a weight-loss medical diet, puppy formulation, or a grain-free approach should look elsewhere; this product is specifically an adult maintenance formula with ancient grains included and is not presented as a therapeutic veterinary diet.

Pros & Cons

Pros

• High share of animal-based protein supports muscle maintenance and energy for active adult dogs.
• Low-glycemic ancient grains and fiber help sustain energy and improve stool quality for many dogs.
• Added BC30 probiotics and omegas support digestion, immune function, and coat health.

Cons

• Grain-inclusive formulation may not suit owners who need or prefer a grain-free diet for their dog.
• As a premium, high-meat kibble, cost per bag can be higher than basic supermarket formulas.

Specifications

Product name	Nulo Frontrunner Ancient Grains Beef, Barley & Lamb
Format	Dry dog food (kibble)
Target life stage	Adult dogs
Primary proteins	Real beef and lamb
Grains used	Barley and oats (ancient grains)
Probiotics	BC30 included
Bag size	25 lb

Our Verdict

Nulo Frontrunner Ancient Grains Beef, Barley & Lamb is a solid choice for owners who want a high-meat, grain-inclusive adult kibble that prioritizes digestion and coat support. The formula delivers strong animal-based protein, probiotic and omega supplementation, and low-glycemic whole grains, making it good value for active dogs that benefit from sustained energy and improved stool quality.

Frequently Asked Questions

Is this food suitable for all adult dog breeds?
Yes, it is formulated for adult dogs of all breeds as a maintenance dry food, but individual needs may vary by size and activity level.

Does it contain probiotics?
Yes, the recipe includes BC30 probiotics to support gut balance and digestion.

Are there any common allergenic ingredients like corn or soy?
No, this formula is made without corn, soy, potatoes, or legumes and uses whole-food ancient grains instead.