Can Dogs Eat Mustard? No — Toxic to Dogs
This food is NOT safe for dogs. Keep it away from your pet.
Mustard is toxic to dogs. Mustard seeds contain compounds that cause gastrointestinal irritation and in large amounts toxicity.
Search another food
Warning Signs & Symptoms
Vomiting, diarrhea, gastroenteritis. Large amounts: more severe gastrointestinal damage.
If Your Dog Ate This
Call vet if more than a small lick consumed. Monitor for vomiting and gastroenteritis.
What to Avoid
all forms — seeds and prepared mustard
Preparation & Serving
Keep all mustard products away from dogs. Check sandwich ingredients and condiment bottles.
Safer Alternatives
- Plain unseasoned meat as a food topper alternative
Did you know?
Mustard seeds contain glucosinolates — compounds that break down into irritating isothiocyanates in the digestive tract, causing the same type of gastric irritation as eating raw cruciferous vegetables in very large amounts.
Portions & nutrition
- Toxic dose (per kg body weight)
- Gastric irritation at any significant amount — not a specific toxicity threshold
- Calories (per 100g)
- 66
- Safe frequency
- Never
Source
What You Need to Know
Even small amounts of mustard can cause vomiting and diarrhea in dogs. All mustard varieties including yellow, Dijon, and whole grain are harmful.
Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic
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 quizRelated Foods
Stay in the loop
Get new food safety guides, vet tips, and alerts delivered to your inbox.