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Ingredient file // Fruit or vegetable

Zucchini

A little fiber, mostly water when fresh

Zucchini is a summer squash added fresh or dried to dog food. Fresh zucchini adds water and a little fiber; dried zucchini keeps those solids without the water. Neither form has a proven special health benefit for dogs.

Role in the food Mostly filler
What it is
An edible summer squash used as chopped fresh fruit or dried pieces and powder in dog food.
Made from
Whole zucchini squash
Main job
Vegetable bulk and fiber
Typical amount
Not published
Watch for
Extremely bitter homegrown squash
Not the same as
Pumpkin

Straight answer

Is Zucchini safe for dogs?

Treat zucchini as a small vegetable extra

Read zucchini beside the ingredients that supply the food's protein and fat. Fresh zucchini is weighed with its water, so its place on a kibble list can overstate what remains after cooking. Choose the food for its complete recipe, not for a zucchini or antioxidant claim.

Why it is in the food
Vegetable bulk and fiber

Our read // In our catalog

In 1 of every 200 foods we track

Share of foods that list it

<1%

16 of the 3,204 foods with an ingredient list on file, from 6 brands. 6 frozen dog food, 5 dry dog food, 4 freeze-dried dog food.

Each square is 1% of the catalog

Where it sits on the label

Median position 8. In the top five of 1 food, so it is usually a supporting ingredient.

Top five List position, heaviest first

Above the salt

89%

Listed before the salt in 89% of foods. In the rest it is under about 1% of the recipe.

Price per lb

Foods with it $1.92
All foods $3.25

Median of the cheapest bag price across 3 priced foods, 41% below the catalog. The price is the food's, not the ingredient's.

Who leans on it

50%

of the foods that list it are from Smallbatch. 6 brands use it in total.

What it is

How it is made

Zucchini is a harvested vegetable, not a processing leftover. Fresh-food makers can chop it into a recipe; ingredient suppliers also remove its water to make pieces or powder that store and ship more easily.4,8

  1. 01 // Source Whole zucchini The edible squash is harvested while its skin and seeds are still tender.
  2. 02 // Process Washed and cut Suppliers prepare zucchini as slices, dice or smaller pieces for food manufacturing.
  3. 03 // Process Dried if needed Air drying or freeze drying removes water before the squash is sold as flakes or powder.
  4. 04 // Output Prepared zucchini Recipes receive chopped fresh squash or a dried form, depending on how the food is made.

What is in it

Composition, dry matter

19

% fiber

About this much of the dry squash was dietary fiber in two tested varieties. Fresh zucchini contributes far less per spoonful because it is mostly water.

Total dietary fiber 18.9-19.5%3
Soluble sugars 36.2-43.1%3
Protein 22.2-30%3
Ash 13.7-14.4%3
Lipid 1.5-1.6%3

These figures describe the dry solids of two raw varieties, not a guaranteed specification for every supplier. Variety and cooking changed some measurements; raw zucchini also carries about 95% water.3,4

Why it is in the bag

Mostly a label vegetable, at the amounts used

  1. Main nutrition
  2. Supporting nutrient
  3. Does a job
  4. Mostly filler

When zucchini appears low on an ingredient list, it is likely too little to change the food's nutrition. Labels list ingredients by weight, and raw zucchini is about 95% water with about 1 g of fiber per 100 g, so even a higher spot means less squash solids than it looks. It likely earns its place as a familiar vegetable on the label, plus a little fiber and moisture in fresh or frozen recipes.4,5

  1. 01

    Adds fresh bulk

    Fresh zucchini brings a lot of water for little energy. That suits a moist recipe, but the water contributes no lasting bulk to finished kibble.4,8

  2. 02

    Adds some fiber

    Its dry solids contain dietary fiber. Because fresh zucchini contains so little dry matter, a small addition contributes only a little fiber to the finished food.3,4

  3. 03

    Offers flexible supply

    Suppliers sell zucchini as flakes, dice, slices and powder. Drying adds processing, and the available sources show no cost advantage over staple recipe ingredients.8

How much A cost study formulated dog diets with 10.5 to 11.1% zucchini as fed; it did not feed them to dogs.1

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.

  1. Owners say

    Fresh zucchini is a low-calorie snack

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Raw zucchini has 17 kcal per 100 g and is about 95% water, so the claim holds for plain fresh pieces. That says little about calories in kibble, where the water is removed.4,8

  2. Brands say

    Zucchini fiber keeps dogs regular

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Two raw varieties contained 18.9 to 19.5% dietary fiber on a dry basis, but fresh zucchini provides only about 1 g per 100 g. These measurements do not show a stool benefit in dogs.2,3,4

  3. Brands say

    Zucchini antioxidants protect a dog's eyes

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    A food database lists 2,125 micrograms of lutein and zeaxanthin per 100 g of raw zucchini. It measures the vegetable, not vision in dogs; a canine nutrition review identifies major gaps for plant-based health claims.2,4

  4. Brands say

    Zucchini vitamin C strengthens canine immunity

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Raw zucchini contains 17.9 mg vitamin C per 100 g. Dogs make their own vitamin C, and no zucchini feeding trial here shows an immune benefit. The nutrient figure is not evidence for the advertised outcome.2,4

  5. Owners say

    Zucchini is toxic to dogs

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    ASPCA lists ordinary zucchini as non-toxic to dogs. Extremely bitter homegrown squash is a separate concern: Oregon State Extension links that taste to cucurbitacins and advises discarding such fruit.6,7

Straight answers

What owners ask

  1. Q01

    Is it just filler?

    Yes, in part

    Fresh zucchini adds water and a little fiber, but it is not a major source of energy or essential nutrients in a small recipe addition. Its presence tells you little about the food's nutritional quality.3,4,5

  2. Q02

    Does fresh mean more zucchini?

    By weight

    Ingredients are listed by weight, and raw zucchini is about 95% water. A fresh addition can look prominent before processing while leaving little zucchini dry matter in the finished kibble.4,5

  3. Q03

    Can my dog eat it raw?

    Yes

    Plain raw zucchini is generally safe. Cut it into small pieces, introduce it gradually and skip seasoned preparations. Discard any homegrown squash that tastes extremely bitter.6,7,9

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Smallbatch 8 / 23
  2. Canidae 4 / 35
  3. Darwin's Natural Pet Products 1 / 4
  4. Bones & Co 1 / 9
  5. Fromm 1 / 67
  6. Stella & Chewy's 1 / 85

Foods that list it / all the brand's recipes we track.

Usually listed with, share of the foods that list it

  1. Sweet Potatoes 56%
  2. Carrots 50%
  3. Broccoli 44%
  4. Kale 44%
  5. Chicken 38%
  6. Beef Liver 31%
  7. Beef Heart 25%
  8. Beef Bone 25%
  9. Beef Kidney 25%
  10. Organic Ground Sunflower Seed 25%
  11. Chicken Gizzard 25%
  12. Chicken Liver 25%

On the shelf

Foods that list Zucchini

16 foods in our catalog list it, highest on the label first.

Bones & Co Boosters Bark Boost Dog Food TopperBones & CoBones & Co Boosters Bark Boost Dog Food TopperTopper // No. 4 on the labelSmallbatch Beef Sliders Freeze-Dried Dog FoodSmallbatchSmallbatch Beef Sliders Freeze-Dried Dog FoodFreeze-Dried // No. 6 on the labelSmallbatch Raw Beef Sliders Frozen Dog FoodSmallbatchSmallbatch Raw Beef Sliders Frozen Dog FoodFrozen // No. 6 on the labelDarwin’s Natural Pet Products Intelligent Design for Dogs Joint Support Grain-Free Frozen Dog FoodDarwin's Natural Pet ProductsDarwin’s Natural Pet Products Intelligent Design for Dogs Joint Support Grain-Free Frozen Dog FoodFrozen // No. 7 on the labelStella & Chewy’s Marie’s Kitchen Gently Cooked Grass-Fed Beef Recipe Frozen Dog FoodStella & Chewy'sStella & Chewy’s Marie’s Kitchen Gently Cooked Grass-Fed Beef Recipe Frozen Dog FoodFrozen // No. 7 on the labelCanidae Under the Sun Grain-Free Chicken Recipe Dry Dog FoodCanidaeCanidae Under the Sun Grain-Free Chicken Recipe Dry Dog FoodDry // No. 18 on the labelFromm Four-Star Salmon Tunalini® Recipe Grain-Free Dry Dog FoodFrommFromm Four-Star Salmon Tunalini® Recipe Grain-Free Dry Dog FoodDry // No. 19 on the labelCanidae Under The Sun Grain-Free Lamb Recipe Dry Dog FoodCanidaeCanidae Under The Sun Grain-Free Lamb Recipe Dry Dog FoodDry // No. 24 on the labelCanidae All Life Stages Large Breed Formula Turkey Meal & Brown Rice Dry Dog FoodCanidaeCanidae All Life Stages Large Breed Formula Turkey Meal & Brown Rice Dry Dog FoodDry // No. 28 on the label
Show 7 more
Smallbatch Small Batch Beef Small Bites Freeze-Dried Dog FoodSmallbatchSmallbatch Small Batch Beef Small Bites Freeze-Dried Dog FoodFreeze-Dried // No. 7 on the labelSmallbatch Lightly Cooked Beef Frozen Dog FoodSmallbatchSmallbatch Lightly Cooked Beef Frozen Dog FoodFrozen // No. 7 on the labelSmallbatch Chicken Small Bites Freeze-Dried Dog FoodSmallbatchSmallbatch Chicken Small Bites Freeze-Dried Dog FoodFreeze-Dried // No. 8 on the labelSmallbatch Lightly Cooked Chicken Frozen Dog FoodSmallbatchSmallbatch Lightly Cooked Chicken Frozen Dog FoodFrozen // No. 8 on the labelSmallbatch Frozen Raw Chicken Patties Frozen Dog FoodSmallbatchSmallbatch Frozen Raw Chicken Patties Frozen Dog FoodFrozen // No. 9 on the labelSmallbatch Chicken Sliders Freeze-Dried Dog FoodSmallbatchSmallbatch Chicken Sliders Freeze-Dried Dog FoodFreeze-Dried // No. 10 on the labelCanidae Under the Sun Grain-Free Recipe Large Breed Real Chicken Dry Dog FoodCanidaeCanidae Under the Sun Grain-Free Recipe Large Breed Real Chicken Dry Dog FoodDry // No. 26 on the label

On labels as

Fresh zucchini: what changes

One page covers every name. Here is what each label word adds, and whether it changes anything for your dog.

Fresh zucchini

Matters for your dog A little

Fresh Zucchini

What it means AAFCO's feed term fresh covers an ingredient never frozen, cooked, dried, rendered or hydrolyzed, with no added salt, curing agents or preservatives, kept only by refrigeration. The squash went in raw, not dried. Fresh pet food as a product type has no AAFCO definition, a 2025 review notes.

For your dog Fresh zucchini is weighed with its water, about 95%, so it can rank higher on the list than the dry squash it leaves behind. In kibble that water cooks off; in frozen food it stays in. Fresh tells you the form, not how much zucchini your dog eats.4,5,8,10,11

  1. Strong
  2. Some
  3. Thin
  4. None

Sources

What we read

Checked October 1, 2026.

  1. 1 Homemade versus extruded and wet commercial diets for dogs: Cost comparison PLOS ONE, 2020 // Journal
  2. 2 Roles of plant-based ingredients and phytonutrients in canine nutrition and health Journal of Animal Physiology and Animal Nutrition, 2022 // Journal
  3. 3 Effects of Household Cooking on Mineral Composition and Retention in Widespread Italian Vegetables Nutrients, 2025 // Journal
  4. 4 Zucchini Squash WhatYouEat, presenting USDA FoodData Central data, n.d. // Database
  5. 5 Reading Labels AAFCO, n.d. // Regulator
  6. 6 Toxic and Non-toxic Plants: Zucchini Squash ASPCA Animal Poison Control, n.d. // Nonprofit
  7. 7 Are volunteer squash toxic? Oregon State University Extension Service, 2024 // University
  8. 8 Zucchini Dehydrates Inc, n.d. // Industry
  9. 9 Can Dogs Eat Zucchini? PetMD, 2025 // Industry
  10. 10 Systematic Review and Meta-Analysis of Quality Claims Associated with Fresh Pet Food: Evaluating Scientific Evidence for Additives, Ingredient Quality, and Effects of Processing in Pet Nutrition Animals (Basel), 2025 // Journal
  11. 11 AAFCO Official Publication 2024, Chapter 6: Official Feed Terms AAFCO, 2024 // Regulator
An ingredient on its own tells you very little. What matters is how much of it there is and where it sits in the list. That is why we weigh the top five rather than reacting to any single name further down. Back to the wiki

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