Can dogs eat spinach? Yes, in small amounts. A few leaves of plain, chopped spinach are safe for most healthy dogs and add fiber and vitamins. The catch is oxalates, natural compounds that can be a problem for dogs with kidney disease or a history of bladder stones. Keep it an occasional topper, not a daily bowlful.
Yes, in moderation. Plain spinach is non-toxic, but it's high in oxalates. Offer a small, chopped portion a few times a week, lightly steamed or raw. Skip it for dogs with kidney issues or calcium oxalate stones, and never share creamed spinach or spinach dip.
Table of Contents
What's in Spinach?
Spinach is mostly water and very low in calories. It brings vitamin K, vitamin A, folate, iron and fiber. Here's a quick look per 100 g raw, using USDA FoodData Central values:
| Per 100 g raw spinach | Amount | What it means for dogs |
|---|---|---|
| Calories | ~23 kcal | Very light treat |
| Fiber | ~2.2 g | Helps regularity; too much causes gas |
| Vitamin K | ~480 µg | Supports normal blood clotting |
| Iron | ~2.7 mg | Poorly absorbed from plants |
| Oxalates | High | The main reason to limit portions |
Approximate USDA values. Oxalate content varies with variety and growing conditions.
The iron in spinach sounds impressive, but oxalates bind much of it, so it's not a meaningful iron source. A complete dog food already covers these nutrients.
The Oxalate Question
Oxalates bind to calcium. In large, regular amounts they can contribute to calcium oxalate bladder stones and put extra strain on the kidneys. For a healthy dog eating a few leaves now and then, this is a small risk. It matters more for:
- Dogs with chronic kidney disease or on a prescription kidney diet. See our kidney diet for dogs guide.
- Dogs with a history of calcium oxalate stones, and breeds prone to them, such as Miniature Schnauzers, Shih Tzus and Yorkshire Terriers.
- Dogs already eating other high-oxalate foods regularly.
Light steaming or boiling lowers soluble oxalates, especially if you discard the cooking water. That's one reason cooked spinach is the better habit.
Raw or Cooked Spinach?
| Form | Verdict | Notes |
|---|---|---|
| Steamed or boiled, plain | Best choice | Softer, easier to digest, fewer soluble oxalates |
| Raw baby spinach | OK in small amounts | Chop finely; whole leaves pass mostly undigested |
| Frozen, plain | OK | Thaw, squeeze out water, chop |
| Canned | Avoid | Usually salted |
| Creamed spinach | Avoid | Butter, cream, salt, often garlic |
| Spinach artichoke dip | Avoid | Cheese, mayo, garlic, onion |
Chopping matters. Dogs don't chew leafy greens well, so big leaves often come out the other end looking the same.
How Much Spinach Can Dogs Eat?
These amounts suit healthy adult dogs a few times a week:
| Dog's weight | Cooked, chopped spinach | Frequency |
|---|---|---|
| Under 20 lb | 1 teaspoon | 2 to 3 times a week |
| 20 to 50 lb | 1 tablespoon | 2 to 3 times a week |
| Over 50 lb | 2 tablespoons | 2 to 3 times a week |
Our conservative estimates, not a published chart. Calories are tiny; the limit here is oxalates and fiber.
Mix it into regular food as a topper rather than serving a pile. Our dog food toppers guide shows other easy add-ins.
Signs Your Dog Had Too Much
Watch for stomach upset or urinary changes. Too much spinach can cause gas, vomiting or diarrhea. Straining to pee, peeing small amounts often, or blood in the urine can point to bladder stones and need a vet visit. If your dog ate spinach dip or creamed spinach, check for onion or garlic; both are toxic, according to the ASPCA.
Spinach vs Other Greens
| Green | Oxalates | Verdict for dogs |
|---|---|---|
| Spinach | High | Small portions, cooked |
| Swiss chard | High | Small portions, cooked |
| Kale | Lower | Small portions; gassy |
| Romaine lettuce | Low | Safe, chopped |
| Green beans | Low | Safe, plain |
If your dog has a history of stones, ask your vet which greens fit the plan. See our lettuce guide for a low-oxalate option.
Which dogs should skip spinach? Dogs with kidney disease or a history of calcium oxalate stones. For them, lower-oxalate veggies like green beans or cucumber are a better pick.
Does cooking help? Yes. Light steaming or boiling softens the leaves and lowers some oxalates, especially if you pour off the water.
— Dr. Sarah Miller, DVM
Spinach for Dogs: Quick Serving Guide
✓ Do
- Steam it lightly and chop it
- Mix a spoonful into food
- Keep it a few times a week
- Start small to test the stomach
✕ Don't
- Share creamed spinach or dips
- Use salted canned spinach
- Serve big piles of whole leaves
- Feed it to dogs with kidney issues
Dogs with kidney disease or bladder stones should skip spinach unless a vet says otherwise.
Frequently Asked Questions
Can dogs eat spinach every day?
It's better as an occasional topper. Daily spinach adds up in oxalates, so a few times a week is a safer habit.
Can dogs eat spinach and eggs?
Yes, plain scrambled egg with a little chopped spinach, cooked with no butter or salt, is a nice combo. See our eggs guide.
Can dogs eat spinach and kale?
Both are fine in small amounts, but kale is also a strong-tasting cruciferous green that can cause gas. Don't serve big portions of either.
Is spinach good for dogs with kidney disease?
Usually not. It's high in oxalates and potassium, so ask your vet before offering any.
Can puppies eat spinach?
A tiny bit of cooked, chopped spinach is fine, but puppies get everything they need from a complete puppy food.
Wondering about other foods? Our A-Z guide to what dogs can eat sorts them into safe, moderation and avoid.
The Bottom Line
Can dogs eat spinach? Yes, in small, chopped, plain portions a few times a week. It's light and nutrient-rich, but oxalates mean it's not for dogs with kidney problems or a history of stones, and spinach dips and creamed spinach are off the table. For lower-oxalate greens, try green beans or browse our Can Dogs Eat…? library.
References & Sources
Written by CPD Nutrition Desk using the sources below. We are not affiliated with these organizations, and this guide is not a substitute for advice from your veterinarian.
- USDA — USDA FoodData Central
- ASPCA — People foods avoid feeding your pets