Quick Answer

Most nuts are not recommended for dogs. While a few nuts like plain cashews can be given in very small amounts as an occasional treat, many nuts — particularly macadamia nuts, walnuts, and almonds — carry significant health risks ranging from gastrointestinal obstruction to pancreatitis and neurological toxicity. Peanut butter is the most common nut-adjacent food given to dogs and is generally safe, but only if it does not contain xylitol, a sweetener that is rapidly lethal to dogs. Seeds, when prepared correctly, tend to be safer than nuts but should still be given in moderation. Below is the complete breakdown of which nuts and seeds are safe, which carry risk, and which you should avoid entirely.

FoodSafety LevelKey Notes
Peanut Butter🟡 Safe with CautionMust verify no xylitol; 3g/kg serving
Cashews🟡 Safe with CautionLower fat than other nuts; small amounts only
Almonds🔴 RiskyHard to digest, obstruction risk, pancreatitis
Walnuts🔴 RiskyHigh fat + mold mycotoxins (black walnuts especially)
Macadamia Nuts🔴 ToxicUnknown toxin; 2.2g/kg causes hind leg weakness
Honey🟡 Safe with CautionSmall amounts; 1g/kg max; see honey guide
Cinnamon🟡 Safe with CautionTiny amounts only; 0.5g/kg max; see spices guide

Detailed Breakdown

Peanut Butter — Safe with Caution

Safe with Caution
Nutrition: Protein-rich source of healthy fats, vitamin E, B vitamins, and niacin. Contains approximately 588 calories per 100g.
Safe Serving: 3g per kg of body weight.
Daily Max: Treats (including peanut butter) should not exceed 10% of your dog's total daily caloric intake.
How to Serve: Choose natural peanut butter with only peanuts (and optionally salt) listed as ingredients. Use it as a treat stuffed into a Kong toy, spread thinly on a lick mat, or as a small dab on your finger. Freezing peanut butter inside a Kong provides mental enrichment for your dog.
Watch Out: This is the single most critical warning about peanut butter — always check the ingredient list for xylitol (also listed as "birch sugar" or "xylite"). Xylitol triggers a rapid and massive insulin release in dogs, causing life-threatening hypoglycemia within 15-30 minutes. Some "low-sugar," "sugar-free," "natural," or "diet" peanut butter brands contain xylitol. Major brands like Jif, Skippy, and Peter Pan are generally xylitol-free, but formulations change. Always read the label every time you purchase.

Source: ASPCA, AKC

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Cashews — Safe with Caution

Safe with Caution
Nutrition: Good source of protein, magnesium, zinc, and iron. Lower in fat compared to many other nuts at approximately 553 calories per 100g.
Safe Serving: Small amounts only; treat-sized portions relative to body weight.
Daily Max: Cashews should be an occasional treat, not a dietary staple.
How to Serve: Offer plain, unsalted, unflavored cashews. Remove any seasoning or coating. Break into small pieces for smaller dogs to reduce choking risk. Cashew butter (without xylitol or added sugar) is an alternative but carries the same fat content considerations.
Watch Out: Cashews are high in fat, and excessive consumption can lead to pancreatitis — a painful and potentially serious inflammation of the pancreas. They should never make up a significant portion of your dog's diet. Dogs with a history of pancreatitis or those prone to obesity should avoid cashews entirely. Use the PawScale calorie calculator to determine how cashew treats fit within your dog's daily caloric allowance.
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Almonds — Risky

Safe
Nutrition: Almonds contain protein, vitamin E, and healthy fats, but these nutritional benefits do not outweigh the risks for dogs.
Safe Serving: Not recommended.
Daily Max: Zero is the safest approach.
How to Serve: Do not feed almonds to your dog — whole or as almond butter in significant quantities.
Watch Out: Almonds pose multiple risks. Their hard, dense texture makes them a choking hazard and a potential source of gastrointestinal obstruction, particularly in small dogs. They are difficult for dogs to digest properly, often leading to gastric intestinal upset including vomiting and diarrhea. The high fat content contributes to pancreatitis risk. While almonds are not directly toxic in the way macadamia nuts are, veterinary professionals consistently recommend against feeding them to dogs.
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Walnuts — Risky

Safe
Nutrition: Walnuts are rich in omega-3 fatty acids and antioxidants for humans, but they present multiple dangers for dogs.
Safe Serving: Not recommended.
Daily Max: Zero is the safest approach.
How to Serve: Do not feed walnuts to your dog.
Watch Out: Walnuts carry two primary risks. First, they are extremely high in fat, creating a significant pancreatitis risk. Second — and more critically — walnuts (particularly black walnuts) are prone to mold contamination. Moldy walnuts contain tremorgenic mycotoxins that cause neurological symptoms including tremors, seizures, and hyperthermia. Because walnuts are large and irregular in shape, they also pose a serious obstruction risk, especially for medium and small breeds. The combination of high fat content, mold risk, and obstruction potential makes walnuts one of the nuts most strongly advised against by veterinarians.
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Macadamia Nuts — Toxic

Toxic

Toxic Compound: Unknown (research is ongoing)

Toxic Dose: As low as 2.2g/kg of body weight.
Onset: 2-12 hours after ingestion.
Nutrition: Irrelevant for dogs — macadamia nuts are toxic.
Safe Serving: None.
Daily Max: Zero.
How to Serve: Do not feed macadamia nuts to your dog under any circumstances.
Watch Out: Macadamia nuts are the only widely recognized truly toxic nut for dogs. The exact toxic compound has not yet been identified, but the effects are well-documented. Even a small amount — as little as 2.2 grams per kilogram of body weight — can cause a distinctive syndrome characterized by weakness of the hind legs, inability to stand, vomiting, tremors, and hyperthermia. The good news is that symptoms typically resolve within 24-48 hours with supportive veterinary care, and fatalities are rare. However, the experience is extremely distressing for the dog. Macadamia nuts are sometimes found in trail mixes, cookies, and baked goods, so be vigilant about checking ingredients.

Source: ASPCA, Merck Veterinary Manual

Emergency: ASPCA Poison Control (888) 426-4435

Honey — Safe with Caution

Safe with Caution
Nutrition: Contains small amounts of vitamins, minerals, and antioxidants. Approximately 304 calories per 100g, primarily from natural sugars.
Safe Serving: 1g per kg of body weight, as an occasional treat.
Daily Max: Very small amounts; honey is still a concentrated sugar source.
How to Serve: A tiny drizzle over food or a small lick from a spoon. Honey is sometimes used to soothe a mild sore throat or as a high-energy treat for active dogs, but its sugar content should always be considered.
Watch Out: Honey is high in sugar and calories, making it inappropriate for overweight or diabetic dogs. Puppies under one year old should not be given honey due to the risk of botulism spores (their immune systems are not yet mature enough to handle them). Use the PawScale calorie calculator to ensure honey treats fit within your dog's daily caloric budget.
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Cinnamon — Safe with Caution

Safe with Caution
Nutrition: Contains trace minerals and has mild anti-inflammatory properties.
Safe Serving: 0.5g/kg is the upper limit; in practice, a light sprinkle at most.
Daily Max: Tiny amounts only — a dash in food, not a regular supplement.
How to Serve: A very small sprinkle of cinnamon on your dog's food is generally safe. Cinnamon is sometimes included in commercial dog food and treats in small quantities.
Watch Out: Cinnamon powder can be irritating if inhaled — do not let your dog sniff it directly. Cinnamon essential oil is highly concentrated and should never be applied to or fed to dogs. Large quantities of cinnamon can cause mouth irritation, digestive upset, lowered blood sugar, and liver disease. Cassia cinnamon contains coumarin, which can be harmful to the liver in large amounts. Stick to tiny culinary amounts.
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Portion Guide by Dog Size

Dog SizeWeightPeanut Butter (max)Cashews (max)
Small5-10 kg (11-22 lbs)15-30g2-3 pieces
Medium10-25 kg (22-55 lbs)30-75g4-6 pieces
Large25-45 kg (55-100 lbs)75-135g6-10 pieces

Treats (including these foods) should not exceed 10% of daily caloric intake. Calculate your dog's daily calories.

These are upper limits for safe nuts only. Remember that treats of any kind should not exceed 10% of your dog's daily caloric intake. Use the PawScale calorie calculator to determine your dog's exact daily needs and calculate how treat calories fit within that budget.

Common Myths

Myth: “"All nuts are bad for dogs”

Truth: Reality: Not all nuts are equally dangerous. Peanut butter (without xylitol) and small amounts of plain cashews are safe for most dogs when given in moderation. The blanket statement that all nuts are toxic is inaccurate. However, the high fat content of virtually all nuts means that even the "safe" ones should only be occasional treats, not regular dietary components. The key is knowing which nuts carry direct toxicity (macadamia nuts) versus which carry risk primarily through fat content and physical properties (almonds, walnuts).

Myth: “"Peanut butter is always safe for dogs”

Truth: Reality: Peanut butter is safe only if it does not contain xylitol. This cannot be overstated — xylitol-containing peanut butter has caused fatal poisonings in dogs. The popularity of peanut butter as a dog treat has led many owners to assume all brands and formulations are safe. Always read the ingredient list. Look for products with a single ingredient (peanuts) or peanuts and salt. Avoid any product labeled "sugar-free," "low-sugar," or "reduced-fat" without verifying the ingredient list.

Myth: “"Nuts are great protein sources for dogs”

Truth: Reality: While nuts do contain protein, they are far too high in fat to serve as a practical protein source for dogs. A 100g serving of almonds provides about 21g of protein but also 49g of fat. The same protein can be obtained from lean chicken breast with a fraction of the fat content. Dogs are omnivores with specific amino acid requirements that are best met through balanced commercial diets or carefully formulated home-cooked meals designed with veterinary nutritionist guidance. Nuts should be thought of as occasional treats at best, not nutritional staples.

Frequently Asked Questions

Can dogs eat nuts?⌄
Most nuts are not recommended for dogs. While some nuts like cashews can be given in very small amounts, others like macadamia nuts are directly toxic. The high fat content common to all nuts creates pancreatitis risk regardless of toxicity. Peanut butter (without xylitol) is the safest nut-adjacent food for dogs when given in moderation.
Is peanut butter safe for dogs?⌄
Yes, peanut butter is generally safe for dogs as long as it does not contain xylitol. Choose natural peanut butter with only peanuts (and optionally salt) as ingredients. Serve in moderation — peanut butter is calorie-dense and should not exceed 10% of your dog's daily caloric intake. Use the PawScale calorie calculator to determine appropriate amounts for your dog's size.
Can dogs eat almonds?⌄
Almonds are not recommended for dogs. While not directly toxic, almonds are difficult to digest, pose a choking and obstruction hazard (especially for small dogs), and their high fat content contributes to pancreatitis risk. If your dog accidentally eats one or two almonds, monitor for vomiting, diarrhea, or signs of abdominal discomfort, and contact your vet if symptoms develop.
Why are macadamia nuts bad for dogs?⌄
Macadamia nuts contain an unidentified toxin that causes a distinctive syndrome in dogs characterized by hind leg weakness or paralysis, vomiting, tremors, and hyperthermia. Symptoms typically appear within 2-12 hours and resolve within 24-48 hours with supportive care. The toxic dose is as low as 2.2g/kg. The exact mechanism remains under research. While rarely fatal, the experience is extremely distressing for the dog.
Can dogs eat cashews?⌄
Small amounts of plain, unsalted cashews are generally safe for dogs. Cashews are lower in fat than many other nuts, but they still contain significant fat that can contribute to pancreatitis if fed excessively. Limit cashews to a few pieces as an occasional treat, and never feed them to dogs with a history of pancreatitis.
Are walnuts safe for dogs?⌄
Walnuts are not recommended for dogs. They are extremely high in fat (pancreatitis risk) and are prone to mold contamination that produces tremorgenic mycotoxins, which cause neurological symptoms including tremors and seizures. Black walnuts are particularly dangerous. The combination of fat content, mold risk, and obstruction potential makes walnuts one of the least safe nuts for dogs.
Can dogs eat seeds like flax or chia?⌄
Yes, many seeds are safer than nuts for dogs. Ground flaxseeds provide omega-3 fatty acids and fiber. Chia seeds (soaked before serving) offer similar benefits. Plain, unsalted pumpkin seeds and shelled sunflower seeds are also safe in moderation. Seeds should be served plain and in amounts appropriate for your dog's size.
How much peanut butter can I give my dog?⌄
The safe serving is approximately 3g per kg of body weight as an occasional treat. For a 20-pound (9 kg) dog, this is about 27g (roughly one tablespoon). Treats of any kind, including peanut butter, should not exceed 10% of your dog's total daily caloric intake. Overweight dogs should receive even smaller amounts. Use the PawScale calorie calculator to determine your dog's daily caloric needs and ensure treats remain within a healthy proportion.

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Medical Disclaimer

The information on PawScale is for educational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult your veterinarian before making changes to your dog's diet. If you suspect your dog has ingested a toxic substance, contact your veterinarian or the ASPCA Animal Poison Control Center (888) 426-4435 immediately.

Sources: ASPCA Poison Control, AKC, Merck Veterinary Manual. Last updated: August 2026.