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

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About This Item

Details

  • Recipe includes organic ancient grains like oats, barley, and millet grown in the US and Canada.
  • High-quality proteins provide amino acids that support lean muscle mass and a healthy heart.
  • The top five ingredients are animal protein sources to feed your furry carnivore.
  • BC30 probiotic supports your pet's digestive & immune health.
  • These high animal-protein, low carb, low glycemic recipes are developed in Austin, TX and manufactured in the USA.

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

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3.6
Rated 3.6 out of 5 stars
15 Ratings

7 Customer Reviews



Rated 1 out of 5 stars
By Lea on Nov 8, 2025

Seemed promising didn't work for us :/

I went out of my way to leave this review in hopes it helps someone else decide. We went with this food for our large breed bernadoodle. It seemed to be superior

I went out of my way to leave this review in hopes it helps someone else decide. We went with this food for our large breed bernadoodle. It seemed to be superior quality, real protein sources. Sadly it gave him orange explosive diarrhea that would wake him in the night & suprise him at random. In retrospect, it is hard to know what is the cause d/t so many different protein sources that are allergens. Not saying to discount this food... if your dog tolerates it would be a good option, but maybe trial a smaller batch or buy somewhere you know you can return if your dog responds negatively...


Rated 1 out of 5 stars
By Cheryl on Nov 18, 2025

Never received!

Never received delivery. No information regarding where package was left. Definitely not in delivery box or at front door per instructions

Never received delivery. No information regarding where package was left. Definitely not in delivery box or at front door per instructions


Rated 1 out of 5 stars
By Mark on Oct 7, 2025

Disappointed

Really wanted to like this food. Gave my 10 mo Boxer athletic Boxer orange diarrhea.

Really wanted to like this food. Gave my 10 mo Boxer athletic Boxer orange diarrhea.


Rated 5 out of 5 stars
By Lynn on Jul 29, 2025

Heart

This help my female heart murmur, since mixing this with American journey dog food her stage 2 heart murmur is stable

This help my female heart murmur, since mixing this with American journey dog food her stage 2 heart murmur is stable


Rated 1 out of 5 stars
By Katherine on Aug 23, 2025

Not likening it

He didn’t care for it but my grand puppy loved it. It’s just my dog

He didn’t care for it but my grand puppy loved it. It’s just my dog


Rated 5 out of 5 stars
By JuJu on Jul 30, 2025

Price

big saving coupon.

big saving coupon.


Rated 4 out of 5 stars
By Janie on Jul 21, 2025

It was an excellent puppy food.

Daisy love it!

Daisy love it!