Dr. Tim's Ultra Athletic Fusion Formula Dry Dog Food, 40-lb bag

By Dr. Tim's
Rated 4.25 out of 5 stars
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$118.99Chewy Price
$119.99Chewy Price
$113.04Autoship Price
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Rated 4.25 out of 5 stars
$118.99Chewy Price
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About This Item

  • This formula contains protein that is 87% derived from animal protein with raw chicken as the first ingredient.
  • Unique fiber mixture encourages a healthy gastrointestinal tract, which is the start of your dog’s immune system.
  • Low carb formula is formulated to work with the hardest performing dogs to improve performance, endurance, and recovery.
  • High levels of omega-3 fatty acids and brewer’s yeast help in high-stress situations, perfect for extremely athletic or working dogs.
  • The optimal vitamin nutrition blend offers essential nutrients to maintain the normal structure and function of skin, coat, and paw pad health.

About Dr. Tim's Dog Food

Premium All-Natural Pet Foods and Treats

Dr. Tim's offers honest, nutritionally sound kibble, wet foods, dietary supplements and freeze-dried treats designed for every life stage. The high-quality ingredients include low-ash protein along with the right blend of carbohydrates, fats and fibers to allow your pet to lead a healthy life.

Foods Made to Match Your Pet

When shopping for Dr. Tim's pet foods, you'll notice the labeling indicates an activity level. That's because they're made to complement your pet's lifestyle, with ideal ratios of protein, fat, carbohydrates and fibers to help her thrive. You'll find recipes that are specially formulated for active pets, low-key pets, extreme athletes and those in need of weight management.


This food is designed for the sporting dog that's active more days than not—dogs who hunt or jog every day, herding dogs, police dogs and the like. It's made for maximum digestion, an important consideration for these dogs that's often overlooked. Protein types and levels, fat types and levels, and fiber sources are formulated to maximize performance and recovery.


This is a diet intended for the dog who lives a normal lifestyle—sleeping on the couch, running around the backyard or going on car rides, walks or hikes and basically just living the good life. The only regular exercise she might get is tail wagging when she sees you at the end of the day, or some loving nose nudges


This food is for dogs who are serious about working nearly every day for long periods of time, such as sled dogs and dogs who hunt most days of the season. It's extremely high in fat, high in protein and low in carbs, with the highest levels of essential omega-3 fatty acids and loads of antioxidants. Performance, endurance and recovery are all enhanced.


This diet is intended for the dog who has put on some extra weight. High protein allows your overweight dog to be more active, and moderate fat allows her to feel satiated so she doesn't beg—an essential part of the equation. The omega-3 and antioxidant profiles help reduce the inflammatory stress that's prevalent in an overweight dog, too

Treats That Deliver

Dr. Tim's freeze-dried treats are formulated for both cats and dogs—perfect for multipet households. They're made from 100% real, USDA-inspected meats from Wisconsin. And since they're freeze-dried, you can give your pet all the nutrition and flavor of raw meat without any of the mess or inconvenience.

Top It Off With Nutrition

Dr. Tim's Flavor Booster is made of 100% real, USDA-inspected beef liver powder from Wisconsin that is freeze-dried to maintain more nutrients. It's perfect for use as a food topper to encourage pets to eat and enjoy their meals, which makes it a great choice for finicky dogs or those who are ill or tired of the same formula.

About Dr. Tim's

As a veterinarian and accomplished musher, Dr. Tim Hunt understood his dogs' need for a food that promotes stamina, endurance and performance through proper digestion. Armed with a cement mixer, a cache of ideas, and an aversion for other diets on the market, Dr. Tim took to his Michigan garage on a mission to formulate a food that replicated a natural, wild diet for his Alaskan Huskies. Today, Dr. Tim's focus has since expanded to bring an honest, nutritionally sound food—sourced only from North America's highest quality ingredients—to every dog.
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Top IngredientsChicken Liver, Chicken Meal, Brown Rice...Chicken Meal, Chicken Fat, Herring Meal...Chicken Meal, Brown Rice, Chicken Fat (Preserved With Mixed Natural Tocopherols...Chicken Meal, Brown Rice, Chicken Fat (Preserved With Mixed Natural Tocopherols...Chicken Meal, Brown Rice, Chicken Fat (Preserved With Mixed Natural Tocopherols...
Health FeatureSkin & Coat Health, Digestive Health, High-EnergyHigh-Energy, Skin & Coat Health, Dental & Breath Care...High-Energy, Skin & Coat Health, Digestive HealthN/AHigh-Energy, Skin & Coat Health, Digestive Health
Special DietHigh-Protein, Pea-Free, With GrainHigh-Protein, Pea-Free, Non-GMO, With GrainHigh-Protein, No Corn No Wheat No Soy, Pea-Free, With GrainHigh-Protein, No Corn No Wheat No Soy, Pea-Free, With GrainHigh-Protein, No Corn No Wheat No Soy, Pea-Free, With Grain
Breed SizeSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Food FlavorChicken, PoultryChicken, PoultryChicken, PoultryChicken, Poultry, Seafood & FishChicken, Poultry, Seafood & Fish
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

3 Customer Questions

Can puppies eat this? I will be getting a 9-12 wk old mini Aussie
Answer by ChewyApr 26, 2021
This recipe is formulated for adult and senior dogs.

How big is the kibble. Looking for small kibble 15 pound very active dog. Thanka
Answer by ChewyJan 16, 2020
This kibble is approximately 6 millimeters in diameter.

What percentage of this food comes from animal sources?
Answer by ChewyNov 28, 2019
This recipe contains 37% Crude Protein. Within that amount of protein, 87% is from animal sources.

ReviewsWrite a Review

Rated 4.25 out of 5 stars
12 Reviews
Would recommend to a friend

12 Customer Reviews

Rated 5 out of 5 stars
By Tyler on Mar 17, 2021

Great food

My dog has always had a hard time with a solid poop. This food made excellent poops and kept weight on my dog even in the middle of bird hunting season running 25 miles a day. It is totally worth it when you need a stick of butter in a bag. My dog eats every brand of food good for a week then becomes picky. This stuff was like a drug, he couldn’t get enough. I stopped feeding it because it’s a little extreme for the off season but he’ll definitely be on it again this fall.

Rated 5 out of 5 stars
By DrTim on Dec 26, 2020

Broken bag

Hi Hadley, sorry about the broken bag and I am sure it was replaced once you notified Chewy it was broke in transit. Hopefully your dog enjoyed the food.

Rated 1 out of 5 stars
By BenW1219 on Dec 8, 2019

Ben hates it!

Purchased this food for an active GSD hoping he'd like it and put some weight on him. No go! He hates it and will bypass a meal if this food is in it.

Rated 5 out of 5 stars
By Atlasandfam on Aug 3, 2019

3 dogs, have been searching for a perfect new food

I have been looking for that perfect food after not being satisfied with certain companies and other foods changing formulas. I wanted high calories, high protein and fat content, and high percentage of protein from animal products. I also wanted grain inclusive with highly digestible grains. This product checks every box and the dogs love it. I changed over cold turkey and stools were solid and small with no digestive upset. It must be highly palatable because all three dogs eat this without question. AWESOME FOOD!

Rated 5 out of 5 stars
By Frankster on Feb 6, 2019

Perfect food for any active husky or malamute breed

My Siberians love this brand. I mix some of this into the Dr. Tim's grain free Kinesis food to help them keep some muscle mass. Their coats are in gorgeous condition from this brand. I receive compliments no matter wherever I bring them. Soft, silky, and most importantly not oily.

Rated 1 out of 5 stars
By HadleyR on Jun 7, 2019

Broken bag

Bag was not original bag and was broken open when we received it.

Rated 5 out of 5 stars
By Judy on Jan 11, 2018

A big hit!

I was disappointed when Bennett’s previous food was discontinued but my son, one of your loyal customers, recommended this product. It was an immediate hit!

Rated 5 out of 5 stars
By Jess on Dec 27, 2017

Great food!

Lots of praise for this food. 3 dogs digest it well since th3 get go. Palatable and full of energry/calories. Dogs love It, look Great, lot a of energry. Can't praise it enough.

Rated 4 out of 5 stars
By xtremelysassy on Oct 31, 2017

Rich food high in Calories

I bought this food as the Great Life Dr E's buffalo food was out of stock.. I have 2 German Shorthair Pointers who are quite active and fit. They LOVED this food but the calorie content in this food 533 calories per cup vs the other was 429 calories a cup caused one of my dogs to gain weight QUICKLY. I didn't pay attention to the calorie count and kept serving them the same portions. All the sudden the weight started to pack on the dogs. Once I returned to the other food their weight went back to wear it should be for their age, size and breed. High quality food but just high in calories. So be careful if you have dogs over the age of 6. They don't burn the calories as much as the younger dogs.

Rated 5 out of 5 stars
By Monty on Sep 2, 2017

works for my Malinois x Dutch Shepherd

It is hard to keep up with the metabolism of my 1 yr 4 month old Dutch Shepherd x Belgian Malinois. This food has helped to keep weight on him and help him fill out. Quality food from amazing people.