Ingredient file // Grain
Long Grain White Rice
Easy energy for dogs, and not much else
Long grain white rice is table rice with the hull and bran milled off, leaving mostly starch. Dogs digest it very well, which makes it a gentle source of calories. It adds little protein, fiber or fat.
- What it is
- Whole long rice kernels with the hull and bran milled away, the same grade sold as table rice.
- Made from
- Paddy rice, hulled and polished
- Main job
- Digestible starch for energy
- Typical amount
- Not published
- Watch for
- Arsenic, when rice is the daily main carb
- Not the same as
- Brewers rice or brown rice
Our read // In our catalog
In 1 of every 3068 foods we track
Share of foods that list it
0%
1 of the 3,068 foods with an ingredient list on file, from 1 brand. All dog food topper.
Each square is 1% of the catalog
Where it sits on the label
Median position 3. In the top five of 1 food, so it is usually a main ingredient.
Above the salt
Almost always listed before the salt, so there is more of it than a pinch.
Who leans on it
100%
of the foods that list it are from Portland Pet Food Company. 1 brand use it in total.
What it is
How it is made
White rice comes from the rice milling industry, which strips the hull and bran to sell the white kernel as food. Whole kernels go to table rice. In the USA, most broken pieces go to pet food.1,7,9
- 01 // Source Paddy rice Rice harvested whole, still in its inedible hull, which makes up about 20% of the grain.
- 02 // Process Hulled The hull comes off first, leaving brown rice with its bran layer still on.
- 03 // Process Bran polished off Milling removes the bran. Broken kernels, about 2 to 3% of processed rice, are sorted out as broken rice.
- 04 // Process Sorted by kernel Mills aim for 55% whole kernels, and growers earn a premium for beating that standard.
- 05 // Output Long grain white rice Whole polished kernels, about 85.5% starch on a dry basis, cooked into the food or topper.
What is in it
Composition, dry matter
85.5
% starch
Average starch in polished rice. Nearly all of the grain is starch, so it supplies calories, not protein or fiber.
Protein swings from 5.9 to 14% between polished rice samples. Broken rice varies more on every nutrient and averages more fat, 1.9% against 0.5%, and more ash, 1.4% against 0.6%.1
Why it is in the bag
What the manufacturer gets
-
01
Highly digestible energy
Polished rice is about 85.5% starch. In a 36-dog trial, the brewer's rice and cassava flour diets shared the top dry matter and energy digestibility of six starch sources.1,2
-
02
A plain, gentle base
With under 1% fat and fiber on a dry basis, and rice rarely named as an allergen, it is a low-residue carb for toppers and sensitive-stomach recipes.1,3
-
03
Priced as human food
Polished and broken rice are mainly food products, seldom fed to livestock because of their high price. In the USA, most broken rice goes to pet food.1
How much No source publishes a typical amount. In one dog study, rice-based kibble, with rice first or second, made up 80% or more of what the dogs ate.4
Our read // The claims
What the evidence supports
Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.
-
Brands say
Rice is easy for dogs to digest
Evidence
- Strong
- Some
- Thin
- None
In a 36-dog trial, 6 dogs per diet, brewer's rice and cassava flour tied for the best dry matter and energy digestibility of six starches. Starch digestibility topped 98% in every diet, and the rice tested was broken, not long grain.2
-
Critics say
White rice spikes a dog's blood sugar
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
In the same 36-dog trial, brewer's rice, corn and cassava diets gave the biggest glucose and insulin rise in the first 30 minutes. The dogs were healthy, and the study measured the curve, not any harm from it.2
-
Critics say
Rice-based food raises a dog's arsenic exposure
Evidence
- Strong
- Some
- Thin
- None
7 dogs on rice-based kibble for at least a year had more hair arsenic than 9 dogs eating no rice, 0.143 against 0.086 micrograms per gram. The ranges overlapped and no health effect was measured.4
-
Owners say
Plain rice settles an upset stomach
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
In a 59-dog trial, an easily digestible diet cleared acute colitis in a median 5 days, against 8.5 days when metronidazole was added. That trial fed a formulated diet, not plain rice, so it says nothing about rice alone.6
-
Owners say
Grains like rice cause food allergies
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
Rice was the trigger in 5 of 297 dogs with proven food reactions, about 2%, and wheat in 38, against 102 for beef. Rice allergy exists but is rare. The claim sells it as common.3
Straight answers
What owners ask
-
Q01
Is it just filler?
No, it's energyIt is about 85.5% starch, and in a dog trial rice tied with cassava as the most digestible of six starches. It supplies calories, not protein. Filler would have no job; rice has a clear one.1,2
-
Q02
Is brown rice better?
Not clearlyBrown rice keeps the bran and its fiber, but also more arsenic: in US rice, 48% of the arsenic in brown rice was the toxic inorganic form, against 33% in white. No dog trial compares them.5
-
Q03
Is it the same as brewers rice?
Close, not equalBrewers or broken rice is the kernel pieces that snap during milling. Starch averages 85.5% in both, but broken rice averages more fiber, 1.6% against 0.4%, more fat, 1.9% against 0.5%, and more ash.1
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Usually listed with, share of the foods that list it
- Chicken 100%
- Yams 100%
- Eggs 100%
- Potato Flour 100%
- Vegetable Oil 100%
- Quinoa 100%
- Kale 100%
On the shelf
Foods that list it
1 foods in our reviews list it. Here are some of them.
Our read // On the bag
Fine as the carb, so judge the protein
Rice tells you where the energy comes from, not how good the food is. In a topper or recipe, look for a named meat ahead of it and a protein figure that does not depend on it. If every food you feed is rice-based, rotate in one built on another starch.
Sources
What we read
Checked October 1, 2026.
- 1 Broken rice and polished rice
- 2 Effects of six carbohydrate sources on dog diet digestibility and post-prandial glucose and insulin response
- 3 Critically appraised topic on adverse food reactions of companion animals (2): common food allergen sources in dogs and cats
- 4 Hair arsenic level in rice-based diet-fed Staffordshire bull terriers
- 5 MSU research: Eating brown rice increases exposure to arsenic in young children
- 6 Randomized controlled trial demonstrates nutritional management is superior to metronidazole for treatment of acute colitis in dogs
- 7 YEAREND: Arkansas rice harvest sets new record despite milling challenges
- 8 Arsenic in Food
- 9 Rough rice