Are green apples better for dogs than red apples?

Slightly, for sugar-sensitive dogs. The lower sugar content and lower glycaemic index of Granny Smith specifically make it a defensible choice for diabetic dogs (with vet supervision), overweight dogs and dogs on a weight-management plan. For a healthy adult dog, the difference between Granny Smith and Honeycrisp is small and either is fine in appropriate portions.

What about cooking apples like Bramley?

Bramley and similar cooking apples are very sour when raw. Most dogs will refuse them. If your dog will eat raw Bramley flesh, it is safe in small quantities with the core and seeds removed. The high tartness (malic acid content) may cause mild oral or gastric irritation in some dogs. Cooked Bramley with no added sugar or fat is also safe; see the baked apple and cooking apples pages.

Can Dogs Eat Green Apples? Yes, and They Are the Lowest-Sugar Pick

Q: Can dogs eat green apples?

Yes. Green apples (Granny Smith, Bramley, Crispin) have the same safety profile as red apples: flesh is safe in moderation, core and seeds must be removed, stem discarded. Green apples are slightly lower in sugar than red varieties (about 9.6 g per 100 g for Granny Smith versus 13 g for Fuji per USDA FoodData Central), which makes them marginally preferable for diabetic, overweight or weight-managed dogs.

Updated May 2026

SAFEBEST FOR DIABETIC OR OVERWEIGHT DOGS

Quick read

Green apples (Granny Smith is the most common variety) carry the same safety profile as red apples for dogs: remove the core, seeds and stem, keep portions modest. Their advantage is lower sugar (about 25% less than Fuji per USDA FoodData Central) and a slightly lower glycaemic index, which makes them the defensible first choice for diabetic, overweight or weight-managed dogs.

Sugar comparison by variety

Variety	Colour	Sugar / 100g	Sugar in one slice (20g)
Granny Smith	Green	9.6g	1.9g
Bramley (cooking)	Green	~9.0g	1.8g
Pink Lady	Pink-red	10.7g	2.1g
Gala	Red-yellow	11.2g	2.2g
Red Delicious	Deep red	11.7g	2.3g
Honeycrisp	Red-yellow	12.0g	2.4g
Fuji	Red-yellow	13.0g	2.6g

Source: USDA FoodData Central (raw apple with skin) and University of Sydney glycaemic-index database. Sugar values are averages; growing conditions can shift values by a gram or two per 100 g either way.

Why dogs might prefer or refuse green apples

Granny Smith is famously tart. Dogs vary in their response: some find the tartness off-putting and refuse Granny Smith while eagerly eating Honeycrisp or Fuji; others happily eat the tart variety and seem to enjoy the crunch independent of sweetness. There is no breed-level pattern; individual preference is the main factor.

If your diabetic or overweight dog refuses Granny Smith, try Pink Lady as the next-lowest-sugar option. The taste is sweeter and the sugar penalty over Granny Smith is modest (1.1 g per 100 g extra). Pink Lady is a defensible compromise when palatability matters.

When green apples genuinely matter

For a healthy adult dog of normal weight, the variety chosen is largely a matter of household convenience. The cases where Granny Smith specifically is worth seeking out:

Diabetic dogs. Every gram of sugar in the daily treat budget matters. See the diabetic dogs page for the full consistency-of-treats protocol; Granny Smith is the variety of choice when apple is part of that.
Overweight or weight-managed dogs. Lower sugar means slightly fewer calories per gram (47 kcal/100g Granny Smith versus 52 kcal/100g average). The difference is small but adds up over months of daily treats. See overweight dogs.
Dogs with insulinoma or other glucose-sensitive conditions. Vet-supervised diet; Granny Smith is the lower-impact apple choice.
Dogs on a hypoallergenic elimination diet. One specific variety, fed consistently, lets the vet attribute reactions to the diet rather than the variety. Granny Smith is a fine default for consistency.

Preparation is identical to red apples

Quarter the apple, remove the core, seeds and stem, slice the flesh into bite-sized pieces appropriate for the dog. Peel for puppies and small dogs to reduce choking and fibre load. Serve at room temperature or cooled; avoid frozen wedges large enough to chip teeth (see frozen apple). The standard 10% daily calorie treat rule from AAFCO applies; use the portion calculator for a per-dog figure.

Frequently asked questions

Is Granny Smith safer than other apples for dogs?+

Marginally, for sugar-sensitive dogs. For a healthy dog, all common varieties are equivalent in safety. The Granny Smith advantage is the lower sugar load, which only matters in diabetes, weight management or insulinoma contexts. The seed and core risks are identical across varieties.

What about green-skinned varieties other than Granny Smith?+

Bramley (cooking), Crispin (also called Mutsu) and Newtown Pippin are other green-skinned varieties. Sugar contents are roughly similar to Granny Smith. All carry the same safety profile. Bramley is generally too tart for raw feeding to dogs; the others vary in palatability.

Do green apples have more vitamin C than red?+

Marginally. Granny Smith is often cited as having slightly higher vitamin C than sweeter red varieties, but the difference is small (around 5 mg per 100 g versus around 4 mg for Fuji per USDA FoodData Central). Dogs synthesise their own vitamin C, so dietary vitamin C is not a clinical concern in healthy dogs.

Can puppies eat green apples?+

Yes, with the standard puppy precautions: 8 to 10 weeks minimum, peeled, cut into 1 cm cubes, single small piece on first introduction. The tartness of Granny Smith may make puppies refuse it; Gala or Pink Lady is often more palatable to a young dog. See the puppies page.

Are green apples safe for senior dogs?+

Yes, with attention to texture. Senior dogs with dental issues may struggle with the firmer flesh of Granny Smith; softer varieties like Gala or applesauce (unsweetened, no xylitol) may be more comfortable. See the senior dogs page.

Granny Smith Cooking apples (Bramley)Diabetic dogs Overweight dogs Portion calculator

Sources: USDA FoodData Central, University of Sydney glycaemic-index database, American Kennel Club, AAFCO treat guidance. Educational reference only; not veterinary advice.