Use Caution
Medium dog serving: tiny amount
Key warning: wild foraged watercress (contamination risk), large amounts, dogs with kidney disease
Can Dogs Eat Watercress? Caution — Safe in Small Amounts, Multiple Cautions
This food requires caution. Read the details carefully before feeding.
Plain watercress is safe for dogs in very small amounts. It contains isothiocyanates like broccoli and is high in oxalic acid. Peppery flavor means many dogs reject it naturally. Small amounts are not harmful but simpler vegetables are better choices.
Search another food
Warning Signs & Symptoms
Isothiocyanates: digestive upset in larger amounts. Oxalic acid: concerns with regular large feeding similar to spinach. Wild watercress: potential contamination from water sources. Large amounts: combined concerns.
If Your Dog Ate This
No emergency at tiny amounts.
Safe to Feed
tiny amounts of plain store-bought watercress — healthy dogs only
What to Avoid
wild foraged watercress (contamination risk), large amounts, dogs with kidney disease
Preparation & Serving
Tiny amounts only. Store-bought only. Plain. Healthy dogs without kidney issues.
Potential Health Benefits
Vitamins C K in small amounts.
Safer Alternatives
- spinach-safe|rocket-arugula|broccoli
Did you know?
Watercress is one of the oldest known leaf vegetables consumed by humans with records of its consumption dating back 3000 years. Hippocrates reportedly chose the location of the first hospital based on proximity to a stream that could grow watercress. The Roman army carried watercress on long marches as a remedy for scurvy — watercress contains more vitamin C per gram than oranges. Wild watercress in streams can harbor the liver fluke parasite Fasciola hepatica — a concern for both humans and dogs who forage it.
Portions & nutrition
- Serving (small dog)
- tiny amount
- Serving (medium dog)
- tiny amount
- Serving (large dog)
- small amount
- Calories (per 100g)
- 11
- Safe frequency
- Rarely — better alternatives available
Source
What You Need to Know
Watercress is safe in small amounts for healthy dogs. The combination of isothiocyanate and oxalic acid content means it has more cautions than simpler vegetables. Wild watercress foraged from streams carries additional risk from water contamination including liver flukes. Store-bought watercress is safer. The peppery flavor that makes it a distinctive human salad green means most dogs are not particularly interested in it.
This food requires care — if your dog has eaten a large amount read our emergency guide
Want to know what other dangers are hiding in your home?
Take the 60-second kitchen safety quiz to find out your dog's risk score.
Take the safety quizHelpful Resources
Stay in the loop
Get new food safety guides, vet tips, and alerts delivered to your inbox.