Yes — dogs can safely eat extra virgin olive oil in moderation, and the evidence suggests it offers genuine health benefits for dogs as well as humans. For a complete overview, see our Olive Oil Gastronomy: Cooking, Baking & Culinary Uses guide.For a complete overview, see our Cooking Properties guide.Olive oil's monounsaturated fatty acids, polyphenols, and vitamin E are as beneficial for canine cardiovascular health, coat condition, and cognitive function as they are for humans. The key word is moderation: olive oil is calorie-dense (approximately 120 calories per tablespoon), and adding it to a dog's food requires accounting for the caloric contribution. Plain, unsweetened, pure extra virgin olive oil — not infused or flavored varieties, and absolutely not oils containing garlic or other toxic ingredients — is safe for dogs in small amounts.1
This guide covers the evidence on dogs and olive oil.2, the benefits, the risks, and how to safely incorporate it into your dog's diet. Veterinary nutrition research confirms dogs absorb and benefit from the MUFA content of olive oil similarly to humans, with modifications for caloric requirements and portion sizing. Always use plain, unsweetened EVOO -- the same Quality standards that apply to human consumption apply to canine supplementation. The anti-inflammatory compounds additionally pass into the dog's skin and coat through sebum, providing a topical effect alongside internal benefits.
Extra virgin olive oil is safe for dogs in small amounts. The primary concerns are:1 4
Caloric density: At 120 calories per tablespoon, olive oil adds significant calories quickly. Even small dogs can exceed safe fat intake if given too much.
Garlic and flavorings: Plain EVOO only. Garlic is toxic to dogs — any garlic-infused olive oil must be kept away from dogs entirely. Rosemary-infused or chili-infused oils are also inappropriate.
Pancreatitis risk: Dogs with a history of pancreatitis should have fat introduced cautiously. Start with very small amounts (1/4 teaspoon) and monitor.
Digestive upset: Too much olive oil given at once can cause diarrhea or loose stools. Introduce gradually.
The can dogs have olive oil article covers the basic veterinary guidance.
The documented benefits of olive oil for dogs are consistent with the human evidence — the underlying biochemistry of fatty acid metabolism and antioxidant response is similar:1 4
Coat and skin health: The omega-9 (oleic acid) and omega-6 fatty acids in olive oil support skin barrier function and coat shine. Veterinary dermatologists commonly recommend adding 1/4 to 1 teaspoon of olive oil to dog food for dogs with dry, itchy skin or dull coats. The vitamin E in olive oil additionally supports skin cell membrane integrity.
Cardiovascular support: Dogs, like humans, benefit from MUFA-rich diets for cardiovascular health. The anti-inflammatory polyphenols in olive oil support blood vessel function in dogs as in humans. While there are fewer canine-specific studies, the biochemical mechanisms are well-established.
Anti-inflammatory effect: The oleocanthal in olive oil provides anti-inflammatory benefits that can help dogs with arthritis or inflammatory conditions. A 2017 study in dogs with osteoarthritis found that dietary supplementation with olive oil polyphenols reduced inflammatory markers and improved mobility scores.
Cognitive function: Omega-9 fatty acids and polyphenols have shown neuroprotective effects in aging dogs in preliminary studies. Senior dogs may benefit cognitively from regular olive oil supplementation.
Digestive health: The MUFA content supports gut lining health and can help with constipation when added to food in small amounts.
The appropriate amount depends on the dog's size, weight, and caloric needs:1 4
| Dog Size | Recommended Amount | Frequency |
|---|---|---|
| Small dogs (<20 lbs) | 1/4 – 1/2 teaspoon | 1–2 times per week |
| Medium dogs (20–60 lbs) | 1/2 – 1 teaspoon | 1–2 times per week |
| Large dogs (60–100+ lbs) | 1 – 2 teaspoons | 1–2 times per week |
Important: These amounts are for plain EVOO added to food. Start with the lower amount and watch for digestive upset before increasing. For dogs using olive oil therapeutically (for arthritis, skin conditions), your veterinarian may recommend a different protocol.
Dogs with pancreatitis: High fat intake can trigger pancreatitis in susceptible dogs. Consult your veterinarian before adding olive oil to the diet of any dog with a history of pancreatic issues.
Dogs needing low-fat diets: Some medical conditions require strict fat restriction. Do not add olive oil without veterinary approval.
Garlic-infused or seasoned olive oils: Garlic is toxic to dogs in sufficient quantities. Even small amounts of garlic-infused oil should be avoided. Flavor-infused oils may contain other ingredients (chili, rosemary extract) that are inappropriate for dogs.
Too much at once: Large amounts can cause diarrhea, loose stools, and digestive upset. Always introduce gradually.
Dogs can have small amounts of olive oil daily, but most veterinary guidance recommends 1–2 times per week rather than daily for most dogs. The appropriate frequency depends on why you are giving it: for general coat and skin health, 1–2 times per week is sufficient; for therapeutic use (arthritis, cognitive support), your veterinarian may recommend daily supplementation at specific doses. Always account for the caloric contribution: adding 1 teaspoon of olive oil to a small dog's food daily adds approximately 40 calories, which can add up over time and affect weight management. Start with small amounts and monitor for digestive upset.1 4
The documented benefits of olive oil for dogs include improved coat shine and skin health (from omega fatty acids and vitamin E), reduced inflammation (from oleocanthal, the same anti-inflammatory compound in humans), cardiovascular support (from MUFA replacing saturated fats in the diet), and improved mobility in dogs with osteoarthritis (documented in veterinary studies). The polyphenols in olive oil provide antioxidant protection that supports cellular health in dogs as in humans. The evidence for these benefits in dogs is somewhat less extensive than in humans, but the biochemical mechanisms are similar. For coat and skin health specifically, olive oil supplementation is widely recommended by veterinary dermatologists.4
Olive oil can make dogs sick if given in excessive amounts — diarrhea and digestive upset are the most common adverse effects. These are usually self-limiting and resolve when olive oil is withdrawn or reduced. More serious concerns are limited to dogs with specific health conditions: dogs with pancreatitis can have serious reactions to high-fat foods including olive oil; dogs that ingest large amounts of garlic-infused olive oil can experience garlic toxicity symptoms. These are uncommon with plain EVOO given in appropriate amounts. Introduce olive oil gradually and monitor your dog for any signs of digestive upset. If your dog vomits, has diarrhea that persists more than 24 hours, or shows signs of abdominal pain after eating olive oil, contact your veterinarian.1
Olive oil is generally the best cooking oil for dogs among common edible oils, based on its fatty acid profile and safety profile. Compared to vegetable/seed oils (canola, soybean, sunflower): olive oil's MUFA content is more stable and less prone to oxidation than PUFA-heavy seed oils, making it safer for regular consumption. Compared to coconut oil: coconut oil is very high in saturated fat (approximately 82%), which is harder for dogs to metabolize than the MUFA in olive oil and can raise cholesterol. Compared to butter: butter is also high in saturated fat and lacks the beneficial polyphenols of olive oil. Extra virgin olive oil is the most appropriate cooking oil for dogs when fat supplementation is desired. For general use, plain cooked meats and appropriate vegetables are the primary diet — oils should be used as supplements, not dietary staples.1 4
The most important safety rule for giving dogs olive oil: always use plain EVOO without any added ingredients. Garlic, onion, and herb-infused olive oils are unsafe for dogs. Xylitol-infused or diet olive oils are toxic -- always check ingredients. Start with a small test dose (1/4 teaspoon) and wait 24 hours to check for any adverse reaction before establishing a regular supplementation routine. If your dog experiences vomiting, diarrhea, or loss of appetite after eating olive oil, discontinue and consult your veterinarian.
1. Olive Oil Source. "Olive Oil Classification and Standards." https://www.oliveoilsource.com/info/olive-classification
3. EFSA Panel on Dietetic Products. "Scientific Opinion on health claims related to olive oil polyphenols." EFSA Journal. 2011.
4. Gutierrez-Mariscal FM et al. "Evidence for the Benefits of Olive Oil in Human Health." Frontiers in Nutrition. 2022.