Squash

Squash comes from the produce trade, which also supplies fruit for processing. A published powder method washes, peels and grinds the flesh before drying it. Dog food makers also use squash in moist recipes.^3,5,6,8

1. 01 // Source Squash fruit Growers supply edible fruit, though an ingredient listed simply as squash does not identify its variety.
2. 02 // Process Flesh prepared In a published powder method, processors washed, peeled and cut the fruit before grinding its flesh.
3. 03 // Process Moist or dried The ground flesh can stay moist for food preparation or be dried and sifted into powder.
4. 04 // Output Prepared squash The food maker uses prepared squash flesh, distinct from the separately traded seeds.

1. 01

   Adds carbohydrate

   Winter squash flesh contains starch and sugars. Their contribution to a finished food depends on how much squash the maker adds, which an ordinary ingredient list does not disclose.^4,7

2. 02

   Adjusts wet texture

   Dried squash powder held water in a laboratory test, giving food makers a way to alter texture. That measurement did not test digestion or stool quality in dogs.⁵

3. 03

   Uses an existing crop

   USDA counted 65,176 tons of squash for processing in 2025. That produce stream gives manufacturers a named vegetable for recipes, though the report says nothing about pet food ingredient prices.^6,8

How much One named wet recipe lists 4% butternut squash; that example does not define the amount used across dog foods.⁸

1. Brands say

   Squash adds carbohydrate and some fiber

   Evidence

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

   A dry matter table for buttercup and butternut squash reports 14 to 53% starch and 9 to 17% cell wall material. Those are properties of the fruit, not a measured contribution to any particular dog food.⁴

2. Brands say

   Squash firms loose stools

   Outruns the evidence

   Evidence

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

   A 31-dog study found better stools after a switch to a fiber-rich food containing dried pumpkin among several fibers. It did not isolate pumpkin or test squash. Water binding measured in squash powder remains a laboratory finding.^1,5

3. Brands say

   Squash strengthens dogs' immune defenses

   Outruns the evidence

   Evidence

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

   A brand-authored trial measured immune-marker changes in 36 dogs given supplemental beta carotene. It tested neither squash nor fewer infections. A wet-food brand promotes squash for immunity, but its recipe does not supply that evidence.^2,4,8

4. Critics say

   Squash is just filler

   Outruns the evidence

   Evidence

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

   Winter squash contains starch and cell wall material, while dried squash powder binds water in laboratory tests. Those give it nutritional and recipe uses. The ingredient list does not reveal how much it contributes to a particular food.^4,5,7