Not Safe for Dogs
Medium dog serving: never
Key warning: all leeks — raw cooked or in any preparation
Can Dogs Eat Leeks? No — Allium Family, Same Toxicity as Onions
This food is NOT safe for dogs. Keep it away from your pet.
Leeks are not safe for dogs. They are in the Allium family along with onions garlic and chives — all of which cause hemolytic anemia in dogs. Leek toxicity is similar to onion toxicity. Never give dogs leeks in any form cooked or raw.
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Warning Signs & Symptoms
Thiosulfate from Allium family: destroys red blood cells causing hemolytic anemia. Symptoms appear 1-5 days after ingestion: pale gums lethargy weakness rapid heart rate. Cooked leeks: still toxic — cooking does not eliminate thiosulfate.
If Your Dog Ate This
Call vet or ASPCA Poison Control 888-426-4435 if significant amount consumed.
What to Avoid
all leeks — raw cooked or in any preparation
Preparation & Serving
Call vet or ASPCA Poison Control 888-426-4435 if significant amount consumed. Monitor for pale gums lethargy and weakness.
Did you know?
Leeks are the national symbol of Wales — Welsh soldiers in the Battle of Crecy in 1346 reportedly wore leeks in their caps to identify each other from enemies during battle. The legend of how leeks became Wales's symbol is debated but the association has persisted for centuries. Leeks are used in the national emblem alongside the daffodil and the Welsh dragon. The toxic thiosulfate compounds in leeks that make them dangerous for dogs are the same compounds present in the entire Allium family.
Portions & nutrition
- Serving (small dog)
- never
- Serving (medium dog)
- never
- Serving (large dog)
- never
- Calories (per 100g)
- 61
- Safe frequency
- Never
Source
What You Need to Know
Leeks are closely related to onions and garlic in the Allium family and carry the same hemolytic toxicity. Thiosulfate compounds in all Allium vegetables destroy red blood cells causing hemolytic anemia. Leeks are commonly used in soups stocks and stews — dogs accessing these dishes may consume significant amounts of leek. Symptoms may be delayed 1-5 days after ingestion while red blood cell destruction progresses.
Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic
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