How Much to Feed a Pitbull

Updated August 26, 2026

Adult pitbulls need roughly 900 to 1,700 calories a day, split into two meals. Where your dog lands on that range depends on weight, muscle mass, spay/neuter status, and how much they actually move.

Start with a real calorie target, not a scoop count

Kibble bag charts overfeed most pitbulls. They assume an average couch-to-dog-park lifestyle and don't account for how dense pit muscle is compared to a Lab of the same weight. Skip the bag and calculate.

Vets use Resting Energy Requirement (RER) as the base:

RER = 70 × (body weight in kg)^0.75

Then multiply by an activity factor to get daily Maintenance Energy Requirement (MER):

Neutered adult, average activity: RER × 1.6
Intact adult: RER × 1.8
Weight loss target: RER × 1.0
Working or highly active: RER × 2.0 to 5.0
Puppy under 4 months: RER × 3.0
Puppy 4 months to adult size: RER × 2.0

Worked example: 55-lb neutered APBT

Weight: 55 lb = 25 kg
RER: 70 × 25^0.75 = 70 × 11.18 ≈ 782 cal
MER (neutered adult, moderate walks): 782 × 1.6 ≈ 1,250 cal per day

If that dog eats a kibble labeled 380 kcal per cup, you're feeding about 3.3 cups a day, or 1⅔ cups per meal. Not the "3 to 4 cups" the bag suggests.

Portion chart by breed and weight

These are starting points for a healthy adult at ideal body condition. Adjust up or down by 10 percent every two weeks based on the scale and a rib check.

American Pit Bull Terrier (APBT)

Typical weight: 30 to 60 lb.

30 lb: 800 to 1,000 cal/day
40 lb: 1,000 to 1,200 cal/day
50 lb: 1,150 to 1,400 cal/day
60 lb: 1,300 to 1,600 cal/day

American Staffordshire Terrier (Amstaff)

Typical weight: 45 to 70 lb. Bulkier build, slightly higher calorie needs at the same weight because of muscle mass.

45 lb: 1,100 to 1,350 cal/day
55 lb: 1,250 to 1,500 cal/day
65 lb: 1,400 to 1,700 cal/day

American Bully (Standard and XL)

Typical weight: 65 to 120 lb. Wide range, and many bullies are overweight without their owners realizing it.

65 lb: 1,400 to 1,650 cal/day
85 lb: 1,700 to 2,000 cal/day
110 lb: 2,100 to 2,400 cal/day

Working dogs, weight-pull competitors, and intact males can run 30 to 50 percent higher.

Puppies need more, more often

Pit puppies grow fast. From weaning through 4 months, feed 3 to 4 small meals a day at roughly 3× RER. Between 4 months and 12 months, drop to 3 meals at 2× RER. Most pits hit adult weight by 12 to 18 months, though bully-line dogs can fill out until 24 months.

Don't switch to adult food until growth plates close, usually around 15 months for medium pits and 18 months for larger bullies. Ask your vet about growth curve tracking if you're not sure. Overfeeding a large-breed puppy is the fastest way to hip dysplasia later.

Read the dog, not the bowl

Weigh your pit once a month and run a body condition score. WSAVA uses a 1 to 9 scale, ideal is 4 to 5:

Ribs easily felt with light pressure, not visible except when moving
Clear waist tuck when viewed from above
Belly tuck when viewed from the side

If ribs are hidden under fat, cut calories by 10 percent. If ribs and spine are sharp, add 10 percent and check for parasites or thyroid issues. Recheck in two weeks.

What overfeeding actually costs

An overweight pit is a joint problem waiting to happen. Cruciate ligament repair (TPLO) runs $3,500 to $6,000 per knee, and pits blow the other one within 12 to 18 months about 60 percent of the time. Chronic arthritis meds add $600 to $1,200 a year. Diabetes management can hit $1,800 a year in insulin and monitoring alone. Feeding correctly is cheaper than any of that.

If you're weighing pet insurance against out-of-pocket for a bully breed prone to orthopedic issues, run the numbers at /paws/tools/insurance-break-even-calculator.

Feeding schedule that works

Two meals a day, roughly 12 hours apart
No free-feeding. Pits will eat until they can't move
Measure with a kitchen scale, not the plastic scoop. Scoop error alone can add 200 to 400 cal a day
Treats count. Cap them at 10 percent of daily calories, or about 125 cal for a 55-lb adult

Fresh or raw diets shift the math because caloric density and moisture content vary. Check the label's kcal per gram or ask the brand for their portion guide, then adjust to the MER you calculated above.

One last thing. Age matters. A 9-year-old pit at the same weight as a 3-year-old needs 15 to 20 percent fewer calories because lean muscle drops with age. Recheck the number every birthday.

Dial in your dog's exact daily portion at /paws/tools/food-portion-calculator.

Tools mentioned in this guide

Food Portion Calculator

Daily kibble cups from the NRC RER veterinary formula, scaled to your bag's kcal-per-cup.