Can Dogs Eat Parsley?

Yes — in small culinary amounts parsley is usually safe and can freshen breath, but avoid large quantities, parsley oil, and use caution for pregnant dogs or dogs on blood thinners.

Quick Safety Summary

Verdict: Yes — small amounts of fresh parsley (curly or flat-leaf) are generally safe for dogs and can help freshen breath, but large amounts, parsley essential oil, and concentrated supplements can be harmful. Avoid frequent large servings in dogs with a history of oxalate stones or dogs on anticoagulant medication. If your dog eats a large amount or shows symptoms, call ASPCA Animal Poison Control at (888) 426-4435 or your veterinarian immediately.

Can dogs eat parsley? (short answer)

Yes — in small culinary amounts parsley is generally safe for dogs. Most dogs can enjoy a little fresh parsley as an occasional garnish or mixed into food. Parsley contains vitamins, minerals and chlorophyll that can help neutralize bad breath. However, like many herbs, parsley has compounds that can be harmful in large or concentrated doses, and there are a few important caveats (see risks below).

Types of parsley: curly vs flat‑leaf (Italian)

Are they both safe?

Both curly parsley (Petroselinum crispum var. crispum) and flat‑leaf/Italian parsley (Petroselinum crispum var. neapolitanum) are culinarily used and are similar from a safety standpoint. Nutritionally they are comparable; the main practical differences for dogs are flavor and volatile oil content:

• Curly parsley: milder flavor, often used as a garnish. Slightly lower volatile oil content, so it’s often considered the milder choice for pets.
• Flat‑leaf (Italian) parsley: stronger flavor and aroma — slightly higher essential oil content. Still safe in small amounts, but the stronger flavor can be more unpalatable and the slightly higher oil content argues for smaller servings.

Nutritional benefits (what parsley gives your dog)

Parsley is low-calorie and nutrient-dense for its weight. A small culinary portion can provide:

• Calories: very low — a tablespoon of fresh chopped parsley is only a few kilocalories.
• Vitamins: notably high in vitamin K, with useful amounts of vitamin C and vitamin A precursors (beta‑carotene).
• Minerals: small amounts of iron and calcium.
• Plant compounds: chlorophyll and volatile oils that may help reduce oral odor.

• Energy: ~5 kcal
• Protein: ~0.3–0.6 g
• Vitamin K: substantial — many times the adult dog's daily requirement if fed in very large amounts (parsley is concentrated in K)
• Vitamin C: ~10–20 mg
• Vitamin A (as beta‑carotene): present in useful amounts

Sources: USDA FoodData Central; ASPCA Animal Poison Control Center.

Breath‑freshening: myth or real benefit?

Parsley can help freshen breath briefly. The chlorophyll in parsley and its aromatic oils can mask or neutralize mouth odors when given as a small fresh garnish. This is a short‑term effect and is not a substitute for regular dental care (brushing, professional cleanings, dental chews as advised by your veterinarian).

How to use for breath: finely chop a small amount of fresh parsley and sprinkle over food, or hide very small pieces in a treat. Don’t use parsley oil, extracts, or large servings for breath control.

Risks and toxicology — what to watch for

While small culinary amounts are usually safe, parsley does contain compounds that pose risks in concentrated or large doses:

• Essential oils and volatile compounds: Parsley contains small amounts of apiol and myristicin (plant phenylpropanoids/essential oils). In small culinary doses these are harmless to most dogs, but concentrated parsley oil, extracts or very large ingestions can cause gastrointestinal upset and, in very large doses, have been linked historically to liver and kidney effects and uterine stimulation.
• Vitamin K: Parsley is very rich in vitamin K. This is not a problem in healthy dogs eating normal culinary amounts, but dogs on anticoagulant medications (e.g., warfarin-like drugs) should avoid parsley because it can interfere with medication effectiveness and clotting monitoring.
• Oxalates: Parsley contains moderate levels of dietary oxalates. Large volumes of high-oxalate plant matter can contribute to the formation of calcium oxalate urinary stones in susceptible dogs. If your dog has a history of oxalate stones or urinary tract disease, check with your vet before offering parsley regularly.
• Pregnancy: Parsley has a traditional history as an emmenagogue/uterotonic in humans when used in concentrated forms (such as oils or large medicinal doses). While normal culinary amounts are unlikely to cause a problem, pregnant dogs should avoid large amounts and especially avoid parsley oil or supplements. Consult your veterinarian if your pregnant or breeding dog ingests large amounts.

There’s no widely cited single “toxic dose” for fresh parsley in dogs because toxicity depends on the form (fresh vs concentrated oil), the dog’s size, and individual sensitivity. Concentrated parsley oil and extracts are the greater risk. If your dog eats a lot (several tablespoons or more, depending on size) or ingests parsley oil or supplements, treat it seriously.

Signs of a problematic ingestion may include:

• Vomiting, diarrhea
• Lethargy or weakness
• Tremors or abnormal neurologic signs (rare)
• Abnormal bleeding/bruising (if on blood thinners)
• Signs of urinary issues in dogs prone to stones

Practical serving guidelines (safe amounts by weight)

Use these conservative suggestions for fresh, finely chopped parsley. Reduce or avoid parsley oil, dried concentrated supplements, or giving parsley daily in large quantities.

• Toy/small dogs (under 10 lb / <4.5 kg): up to 1/4 teaspoon fresh minced parsley per day as an occasional treat.
• Small/medium dogs (10–25 lb / 4.5–11 kg): up to 1/2–1 teaspoon fresh minced parsley per day.
• Medium/large dogs (25–50 lb / 11–23 kg): up to 1–2 teaspoons (or 1/2 tablespoon) fresh minced parsley per day.
• Large/giant dogs (>50 lb / >23 kg): up to 1 tablespoon fresh minced parsley per day as an occasional garnish.

• Dried parsley is more concentrated—use roughly one-third the fresh amount (or follow package instructions). Parsley oil or concentrated extracts are not recommended for pets.
• These are conservative, occasional-use guidelines. If you want to use parsley daily, discuss with your veterinarian.

How to feed parsley safely

• Always use fresh, washed parsley. Remove tough stems and chop finely to avoid gagging or choking.
• Start with a tiny amount and watch for GI upset or changes in behavior.
• Avoid feeding large volumes, parsley essential oils, or parsley supplements.
• Don’t rely on parsley as a long‑term breath remedy or dental treatment—maintain dental care routines.
• If your dog is on blood‑thinning medication, pregnant, or has a history of urinary stones, check with your veterinarian before offering parsley.

When to call poison control or your vet

Call ASPCA Animal Poison Control at (888) 426-4435 or your veterinarian if any of the following occur:

• Ingestion of large quantities (several tablespoons or more for small dogs; proportionally large amounts for bigger dogs)
• Ingestion of parsley essential oil, concentrated extracts or supplements
• Vomiting, diarrhea, lethargy, tremors, collapse, or abnormal bleeding
• Your dog is pregnant or on anticoagulant medication and has eaten parsley

Bottom line

Fresh curly or flat‑leaf parsley given in small, finely chopped amounts is generally safe for most dogs and can help temporarily freshen breath while providing small amounts of vitamins and minerals. Avoid concentrated parsley oil or supplements, large repetitive feedings, and use caution with pregnant dogs, dogs on blood thinners, or dogs prone to calcium oxalate stones.

Key Takeaways

• Yes, small amounts of fresh parsley are generally safe and can freshen breath.
• Curly and flat‑leaf parsley are similar in safety; flat‑leaf is slightly stronger in flavor and oils.
• Parsley is high in vitamin K and contains oxalates and volatile oils — avoid large or concentrated doses.
• Pregnant dogs and dogs on anticoagulants should avoid parsley or consult a vet first.
• For large ingestions or symptoms, call ASPCA Animal Poison Control at (888) 426-4435 or contact your veterinarian.

Other reputable sources: USDA FoodData Central; American Veterinary Medical Association (AVMA); Pet Poison Helpline.

Frequently Asked Questions