Nulo Challenger Puppy & Adult Alpine Ranch Beef, Lamb & Pork Dry Dog Food, 24-lb bag

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$105.99 Chewy Price
($4.42 /lb)
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About This Item

Details

  • This grain-inclusive kibble features 32–35% protein—plus, 83–90% of this protein is animal-based for the meaty nutrition your dog craves.
  • Amino acids from protein promote lean muscles and a strong, healthy heart.
  • Made with low-glycemic, organic ancient grains like oats, barley, and millet.
  • Supports a strong immune system with wholesome fruits, vegetables, and vitamins C and E.
  • Provides a balanced source of omega-3 and -6 fatty acids to nourish the skin and coat.

Ingredient Information

Feeding Instructions

Learn More About Nulo From Our Team of Experts

Peak Nutrition, Powered by Purpose

The spirit of Challenger is reaching beyond conventionally grown ingredients and choosing sustainability. With ethically-sourced ingredients like beef, duck, haddock, and organic grains like millet, oats, and barley, we can enrich the way we feed our pets.

Nutrition Meets Sustainability

Challenger recipes use ethically-sourced proteins like beef, lamb, pork, haddock, salmon, duck, turkey, and guinea fowl. Organic ancient grains like millet, oats, and barley provide low-glycemic carbs while supporting sustainable agriculture.

Fueled by High Animal Protein

Nulo's Challenger line provides 32-35% protein content, with 83-90% derived from animal sources.  Each recipe features animal proteins as the top ingredients, ensuring a high-protein diet that supports lean muscle mass and overall health.

Nourish Health with Premium Ingredients

Advanced prebiotics and BC30 probiotics aid digestive and immune health. Ancient grains, ethically sourced proteins, miscanthus grass and superfoods fuel optimal nutrition. Vitamins and omegas nourish immunity, skin, and coat.

About Nulo

Nulo was founded on the principle that our pets are at their best when they are fueled with the right selection of ingredients—functional, delicious, and nutritious. That’s why some of the best athletes in the world choose Nulo for their best friends.

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Questions & Answers

2 Customer Questions


Why are large puppies only allowed to use as supplemental or intermittent feeding yet every one else (adults or small/medium puppies) can eat?

Answer by ChewyMar 08, 2025
This food is not formulated to meet the guidelines of the AAFCO for large breed puppies (70 pounds or more as an adult). Large breed puppies have different nutritional requirements than smaller breeds.

How many cups are in each bag ?

Answer by ChewyFeb 06, 2026
For the Nulo Challenger Puppy & Adult Alpine Ranch Beef, Lamb & Pork Dry Dog Food, the approximate number of cups per bag is as follows: 4.5 pound bag - about 17.1 cups 11 pound bag - about 41.8 cups 24 pound bag - about 91.2 cups
4.4
Rated 4.4 out of 5 stars
74 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Digestibility

82% Positive

Ingredients

74% Positive

Nutritional Value

77% Positive

Palatability

74% Positive

0 Customer Reviews