Eli Carver of Cold River Boerboels kneeling beside Sun Wukong, his Boerboel, in front of the 16,917 lb UPF world-record weight pull cart

Eli Carver & Sun Wukong · Cold River Boerboels · UPF world record, 16,917 lb

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FUELED BY BULLY MAX: COLD RIVER BOERBOELS. THE WORLD-RECORD KENNEL RUNS ON PRO SERIES 31/25.

Eli Carver tested premium kibble, homemade diets and raw before his kennel settled on one food. Bully Max PRO Series 31/25 is meat-based, has no by-products, and packs 600 calories per cup, so a 150 lb Boerboel gets working-dog fuel without a giant bowl.

Every Cold River puppy, breeding female and competitor runs on Bully Max PRO Series 31/25 High Calorie dog food: 31% protein, 25% fat, 600 calories per cup. Zero recalls since 2009.

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Why Eli feeds Bully Max

THE FOOD HAD TO EARN ITS SPOT.

Cold River’s rule is simple: if it doesn’t show up in the dogs, it doesn’t stay in the kennel. Bully Max cleared every requirement on Eli’s list.

Meat-based protein, no by-products

High-quality protein sources and consistent ingredient quality were the first two boxes. PRO 31/25 is 31% protein with no animal by-products.

600 calories per cup

Weight-pull conditioning burns through calories. Digestible, calorie-dense food means the dog holds weight and muscle through training without an oversized meal.

Puppies to competitors, one program

Puppies on the treadmill, young dogs on sled pulls, veterans and breeding females all run on the same backbone. Eli’s take: nutrition starts in the whelping box and never stops.

It showed up in the dogs

Better body condition, better muscle development, better coat quality and better recovery between training sessions. Zero recalls since 2009, Made in the USA.

Eli Carver kneeling beside a Boerboel in a harness on a slat-mill treadmill during conditioning — **Conditioning day** · Cold River Boerboels · Bully Max sponsored

“Genetics create potential. Training develops it. Nutrition helps unlock it.”
Eli Carver · Cold River Boerboels · Bully Max sponsored handler

Feed what Cold River feeds

The record

22,039 LB. EACH.

16,917lb UPF world record, Sun Wukong, Nov 2025, at the Bully Max Training Facility

22,039lb each, Sun Wukong & Mr. Wednesday, May 9, 2026, as reported

27+years Eli has trained, worked and bred Boerboels

600calories per cup in the food that fuels them

Two Boerboels, Sun Wukong and Mr. Wednesday, on the weight-pull track beside loaded carts at the reported 22,039 lb pull — **Sun Wukong & Mr. Wednesday** · Cold River Boerboels · reported UPF world record, May 2026

Pull results as reported by the kennel and UPF. Every dog in the Cold River program is registered, DNA tested and OFA or PennHIP screened before breeding.

From the kennel

WATCH THE PROGRAM.

Treadmill work, sled pulls and the sponsorship announcement, straight from Cold River’s TikTok.

Cold River Boerboels · Bully Max sponsored · Watch on TikTok

Shop PRO Series 31/25

Boerboel feeding

BIG DOG. SMALLER BOWL.

Dog’s weight	PRO 31/25 per day	30/20 per day
120 lb	6⅔ – 7⅓ cups	4 – 4⅔ cups
150 lb	8⅔ – 9⅓ cups	5 – 5⅔ cups
180 lb	10⅔ – 11⅓ cups	6 – 6⅔ cups

Split the day’s amount into 2–3 measured meals. No single giant bowl.
Standard 8 oz cup. PRO 31/25 is for dogs in heavy work or that need to gain; 30/20 is the everyday maintenance food for a fit adult.
Adjust to keep a lean, fit condition. Weight-pull dogs eat more than couch dogs.

Get PRO 31/25

PRO column: Bully Max PRO Series 31/25 feeding chart (80 lb: 4–4⅔ cups, plus ⅓ cup per 5 lb over 80 lb). 30/20 column: Bully Max 30/20 feeding chart (76–100 lb: 3⅓–4 cups, plus ⅓ cup per 10 lb over 100 lb). Feeding charts are starting points for working dogs; your dog’s needs vary with age and activity.

Fawn Boerboel eating Bully Max kibble from a Bully Max bowl in a dark studio — **Boerboel on Bully Max** · studio

BOERBOEL OWNERS. WORD FOR WORD.

50,000+ 5-star reviews · Rated 5/5 by DogFoodAdvisor.com
Boerboel, Corso and Mastiff owners, verified buyers, quoted as written.

Fred H.'s two Boerboels standing in a grassy yard — **Fred H.** Verified BuyerBoerboels (South African Mastiff) · 30/20 Chicken

Cyrus E.'s Boerboel, Rambo, lying on the kitchen floor beside a bag of Bully Max PRO — **Cyrus E.** Verified BuyerBoerboel · Rambo, 2 years · PRO Series

Jonathan G.'s black Cane Corso in a Bully Max harness on a walk — **Jonathan G.** Verified BuyerCane Corso (Italian Mastiff) · 30/20 Chicken

Curtis T.'s adult French Mastiff (Dogue de Bordeaux) standing on the porch steps — **Curtis T.** Verified BuyerFrench Mastiff (Dogue de Bordeaux) · 30/20 Chicken

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WHAT COLD RIVER FEEDS

Lowest price guaranteed and freshness guaranteed, direct from Bully Max. Subscribe & Save 10%: pause, edit or cancel anytime. Free shipping over $35 on Subscribe & Save ($100 one-time).

The Cold River base

PRO Series 31/25 High Calorie

48 lb · 600 kcal per cup

$188.99with Subscribe & Save 10% · $209.99 one-time

31% protein, 25% fat. The food every Cold River puppy, female and competitor runs on.

Shop PRO 48 lb

First time? Start with 16 lb: $71.97

Everyday maintenance

30/20 High Protein Chicken

40 lb · 535 kcal per cup

$116.99with Subscribe & Save 10% · $129.99 one-time

30% protein, 20% fat. On the sled in Cold River’s announcement video. For a fit adult Boerboel between conditioning blocks.

Shop 30/20 40 lb

Heavy conditioning

Bully Max Power Chews for Weight Gain bag

Weight Gain Power Chews

1 bag · 1,800 calories per bag

$27.47one-time · Subscribe & Save available

Extra calories from real chicken for hard keepers and dogs carrying a heavy training load. Part of the Cold River supplement stack.

Shop Power Chews

Zero recalls

Since 2009. Triple-Tested for Safety.

Made in the USA

With globally sourced ingredients, by a family-owned company.

Rated 5/5

By DogFoodAdvisor.com. Over 50,000 5-star reviews.

No by-products

Meat-based, high-performance nutrition.

BOERBOEL QUESTIONS

Which Bully Max food does Cold River Boerboels feed?

The base of the Cold River program is PRO Series 31/25: 31% protein, 25% fat, 600 calories per cup. Growing puppies, breeding females, retired veterans and active competitors run on it, with Bully Max chews layered in by age and workload.

Can a Boerboel puppy eat PRO 31/25 or 30/20?

Yes. Bully Max dog foods are suitable for large-breed dogs, including large-breed puppies, under AAFCO guidelines. Prefer a puppy formula? 24/14 High Protein & Growth Puppy Food is 419 calories per cup and made for growing big dogs.

PRO 31/25 or 30/20 for my Boerboel?

PRO 31/25 (600 kcal per cup) is for dogs in heavy conditioning, hard keepers and dogs that need to gain weight and muscle fast. 30/20 (535 kcal per cup) is the everyday maintenance food for a fit adult. Many owners run PRO during training blocks and 30/20 between them.

How do I switch a big dog over?

Follow the 7-day diet transition: days 1–2, 25% Bully Max; days 3–4, 50%; days 5–6, 75%; day 7, 100%. Split the daily amount into two or three measured meals.

Is Cold River Boerboels sponsored by Bully Max?

Yes. Cold River Boerboels and handler Eli Carver are a Bully Max sponsored kennel and handler. The kennel feeds Bully Max PRO Series 31/25 and the Bully Max supplement line as part of its competitive program.

Alucard, a Cold River Boerboel, pulling a loaded cart of concrete blocks on an indoor weight-pull track — **Alucard** · Cold River Boerboels · Bully Max sponsored

FEED WHAT THE WORLD-RECORD KENNEL FEEDS

PRO Series 31/25: 31% protein, 25% fat, 600 calories per cup. Meat-based, no by-products. Made in the USA with globally sourced ingredients. Zero recalls since 2009.

Subscribe & Save 10%: PRO 48 lb

$188.99 with Subscribe & Save 10% · ~~$209.99~~ one-time · Free shipping over $35 on Subscribe & Save ($100 one-time)

More from Bully Max

Guides by breed and goal, all on the same 30/20, 25/11, 24/14 and PRO 31/25 formulas.