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FREEZE-DRIED RAW FEEDING GUIDE

How to feed a Bullmastiff

The Bullmastiff is a 100-to-130-pound guardian built on a deep, broad chest and a calm, low-revving engine — a combination that makes how you feed one a genuine health decision, not just a routine.

Here is exactly how to feed a Bullmastiff on freeze-dried raw: portioned for a giant frame, fed in smaller meals to respect a bloat-prone build, with the lean protein and joint nutrition this breed's body depends on.

  • Adult weight100–130 lb
  • SizeGiant
  • EnergyModerate
  • Lifespan7–9 years
  • CoatShort, dense — seasonal shedder, drool-prone
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A healthy Bullmastiff
iStock / Getty Images Plus via Getty Images

What a Bullmastiff's body needs

Every Bullmastiff trait comes back to one thing: how you feed them. Here's what matters most.

  • Giant, slow-maturing frame

    Needs: Controlled growth, lean protein

    Measured freeze-dried raw fed by weight keeps a Bullmastiff lean as it fills out over 18–24 months — and a lean giant is the single biggest lever for protecting joints and adding years.

  • Deep chest, bloat & GDV risk

    Needs: Smaller, calmer meals

    Calorie-dense freeze-dried raw lets you feed a satisfying meal in a smaller volume, making it easy to split the day into two or three portions instead of one large, gas-prone feeding.

  • Hip & elbow dysplasia risk

    Needs: Joint support + lean weight

    Real meat, organ and ground bone supply natural glucosamine and chondroitin while omega-3s calm joint inflammation — and keeping a 120-pound dog lean takes load straight off those joints.

  • Powerful, muscular build

    Needs: High-quality animal protein

    A diet built on meat, organs and bone fuels and maintains a Bullmastiff's heavy muscle without the carb fillers that add empty weight to a frame that does not need it.

  • Short coat, drooly jowls, ear-prone

    Needs: Whole-food, omega-rich nutrition

    Minimally processed raw with whole-food fats supports the skin barrier and dials down the low-grade inflammation behind the recurring ear and skin issues this breed can develop.

How much to feed a Bullmastiff

Quick answer: a healthy adult Bullmastiff (100–130 lb) needs about 15.0–19.5 oz of freeze-dried raw per day, split across two meals. Freeze-dried is calorie-dense and measured dry — so it's much less by volume than kibble. Feed to a lean waistline and adjust every few weeks.

Ideal adult weightFreeze-dried per dayPer meal (×2)
100 lb 15.0 oz 7.5 oz
108 lb 16.2 oz 8.1 oz
116 lb typical Bullmastiff 17.4 oz 8.7 oz
124 lb 18.6 oz 9.3 oz
130 lb 19.5 oz 9.8 oz

Starting points for a moderately active adult (~0.15 oz of freeze-dried per lb of ideal weight). Active dogs need a little more, couch companions a little less — always adjust to body condition, not the bag.

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What to feed a Bullmastiff

For a Bullmastiff we recommend complete freeze-dried raw as the daily base — real meat, organs and ground bone with no heat-processed filler — fed in two or three measured meals, or used as a rich topper while you transition.

Lean single proteins like Chicken keep calories honest for an easy-keeping giant; Beef and Lamb add richness for harder-working or underweight dogs. Just add water and serve — the moisture also helps slow a fast eater down.

Recipes for Bullmastiffs

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Daily support for Bullmastiffs

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Treats Bullmastiffs love

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Feeding a Bullmastiff by life stage

  • Puppy: Giant-breed Bullmastiff puppies must grow slowly — they are not fully mature until 18–24 months, and pushing fast growth raises hip and elbow dysplasia risk. Feed a controlled amount across 3–4 smaller meals and keep the puppy lean and rangy, never roly-poly.
  • Adult: Feed to a body you can feel ribs through, split across two or three meals to respect the bloat-prone chest. Use the chart below as a starting point and adjust to body condition, not to the bag.
  • Senior: With a 7–9 year lifespan, joint and heart support matter early. Trim portions as activity falls, keep protein high to hold onto lean muscle, and lean into omega-3 and joint-supporting nutrition.

Common Bullmastiff concerns — and the diet connection

  • Bloat & GDV (deep-chested build)Feeding mechanics are the lever here: calorie-dense freeze-dried raw split into smaller, calmer meals at floor level, with rest before and after, supports a lower-risk routine for this high-risk breed.
  • Hip & elbow dysplasiaLargely genetic, but lean weight plus joint nutrients — glucosamine from bone and cartilage, plus omega-3 — help support comfortable movement and ease the daily load on giant-breed joints.
  • Carrying excess weightBullmastiffs are easy keepers that gain quietly, and every extra pound stresses joints and heart; measured raw feeding to a lean body condition is the most preventable health win there is.
  • Heart health (DCM & SAS predisposition)Diet does not treat these conditions, but staying lean and feeding clean, high-quality animal protein supports overall cardiovascular wellness and avoids the strain extra weight places on the heart.
  • Recurring ear & skin issuesLarge ear canals and drooly jowls invite irritation; a whole-food, omega-rich, low-filler diet supports the skin barrier and helps keep inflammation in check from the inside.

Diet supports health but doesn't replace veterinary care — ask your vet about any specific condition.

Feeding a Bullmastiff: what to know

A Bullmastiff's deep chest puts it among the breeds most prone to bloat and GDV, so feeding mechanics matter as much as the food itself. Split the daily amount across two or three smaller meals, keep the bowl on the floor, and leave an hour of quiet on either side of every meal — no running, no roughhousing.

These are big, easy-keeping dogs that gain weight quietly, and every extra pound lands on giant-breed joints. Weigh portions rather than eyeballing them, feed to a body you can feel ribs through, and re-check the amount whenever activity drops.

Bullmastiff feeding questions

How much should I feed my Bullmastiff?
A healthy adult Bullmastiff (100–130 lb) needs roughly 15–20 oz of freeze-dried raw per day, split across two or three meals. Freeze-dried is calorie-dense and measured dry, so it is far less by volume than kibble — feed to a lean body condition and adjust every few weeks.
How do I feed a Bullmastiff to lower bloat risk?
Split the daily amount into two or three smaller meals rather than one large one, keep the bowl on the floor, feed multiple dogs separately, and avoid exercise for an hour before and after eating. Freeze-dried raw rehydrated with water also adds moisture and helps slow a fast eater.
What is the best food for a giant breed like a Bullmastiff?
A complete freeze-dried raw diet of real meat, organs and ground bone gives a giant frame high-quality protein for lean muscle plus natural joint nutrients, without the carb fillers that pad on extra weight. Lean proteins like Chicken make portion control easy for an easy-keeper.
How do I switch my Bullmastiff to raw?
Transition over 7–10 days, mixing a little more Land Animal into the old food each day. Because raw is rich, start at the lower end of the range and watch the waistline — and keep meals split to protect the deep chest throughout.
Does a Bullmastiff need joint support?
Most do. As a giant breed with hip and elbow dysplasia risk, a Bullmastiff benefits from the natural glucosamine and omega-3 in freeze-dried raw with real bone and organ — and keeping this big dog lean is the most effective joint protection of all.

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  • "Knowing exactly how much to feed took all the guesswork out. He's leaner, with more energy on our walks."

    — Jenna & Cooper

  • "My picky rescue finally runs to the bowl — and cleanup in the yard is a fraction of what it was."

    — Priya & Luna
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Portions are starting points for freeze-dried raw and AAFCO complete-and-balanced recipes. Always feed to your individual dog's body condition and ask your vet about specific health needs.