Use Caution
Medium dog serving: small amount
Key warning: large amounts, wild watercress (parasite risk), dogs on blood thinning medications
Can Dogs Eat Watercress? Caution — Small Amounts Only, Medication Interactions
This food requires caution. Read the details carefully before feeding.
Watercress is safe for dogs in small amounts and has been used as a natural diuretic. It contains isothiocyanates that cause digestive upset in large amounts. Small amounts as a food topper are acceptable for healthy dogs.
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Warning Signs & Symptoms
Large amounts: isothiocyanates causing gastrointestinal irritation. High in vitamin K — may interact with blood thinning medications. Peppery compounds: digestive upset in sensitive dogs.
If Your Dog Ate This
No emergency at small amounts.
Safe to Feed
small amounts of plain supermarket watercress only
What to Avoid
large amounts, wild watercress (parasite risk), dogs on blood thinning medications
Preparation & Serving
Supermarket only — never wild. Small amounts. Plain only. Avoid if on medications.
Potential Health Benefits
Vitamin K, vitamin C, antioxidants in small amounts.
Safer Alternatives
- rocket-arugula|spinach-dogs|parsley
Did you know?
Watercress is one of the oldest known leaf vegetables consumed by humans with evidence of consumption going back to ancient Persian and Greek civilizations. Hippocrates the father of medicine reportedly chose to build his first hospital near a stream specifically to have access to fresh watercress for treating his patients. It was a staple food for poor Irish and English workers in the 19th century.
Portions & nutrition
- Serving (small dog)
- small amount
- Serving (medium dog)
- small amount
- Serving (large dog)
- small amount
- Calories (per 100g)
- 11
- Safe frequency
- Occasionally
Source
What You Need to Know
Watercress is a peppery aquatic plant that is safe in small amounts. It contains isothiocyanates similar to other cruciferous vegetables and should be fed in small amounts only. Dogs on blood thinning medications should avoid watercress due to high vitamin K content. Wild watercress from untested water sources may carry parasites and bacteria — only use supermarket watercress.
Breed-Specific Notes
Avoid in dogs on blood thinning medications.
This food requires care — if your dog has eaten a large amount read our emergency guide
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