Is Leek toxic to dogs?

Yes. According to Plants4Pets, Leek is toxic to dogs. Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide This entry has not been manually verified yet — treat it as guidance only.

Is Leek toxic to horses?

Yes. According to Plants4Pets, Leek is toxic to horses. Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide This entry has not been manually verified yet — treat it as guidance only.

Which pets are most at risk from Leek?

Our database flags Leek as toxic to: cats, dogs, horses.

What should I do if my pet eats Leek?

Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Is Leek toxic to cats, dogs? (Allium ampeloprasum)

Leek (Allium ampeloprasum) is marked as potentially toxic to cats, dogs, horses in the Plants4Pets database. Keep this plant out of reach of curious pets and read the species-specific notes below.

Photos of Leek (Allium ampeloprasum)

Leek (Allium ampeloprasum) — plant photo, pet toxicity guide

Is Leek toxic to cats, dogs or horses?

Cat Toxic Not verified

Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide
Dog Toxic Not verified

Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide
Horse Toxic Not verified

Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide

Community confirmations show that other users find this rating helpful. They are not verified by our team.

Leek plant details and common names

Family: Liliaceae

Also known as: Elephant Garlic

Safety advice if a pet eats Leek

Many popular houseplants and garden species can cause vomiting, drooling, skin irritation or more serious symptoms when chewed by cats, dogs or horses. The information on this page is for educational purposes and does not replace a veterinary consultation.

If your pet has eaten any part of Leek (Allium ampeloprasum), note the amount ingested, watch for unusual behaviour and contact a veterinarian or pet poison helpline immediately.

Found outdated or incorrect data? Use the report form below or e-mail kontakt@plants4pets.pl with the plant name, species affected and your source — we review every submission.

FAQ: Leek and pet toxicity

Is Leek toxic to cats?: Yes. According to Plants4Pets, Leek is toxic to cats. Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide This entry has not been manually verified yet — treat it as guidance only.
Is Leek toxic to dogs?: Yes. According to Plants4Pets, Leek is toxic to dogs. Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide This entry has not been manually verified yet — treat it as guidance only.
Is Leek toxic to horses?: Yes. According to Plants4Pets, Leek is toxic to horses. Vomiting, breakdown of red blood cells (hemolytic anemia, Heinz body anemia), blood in urine, weakness, high heart rate, panting Toxic principles: N-propyl disulfide This entry has not been manually verified yet — treat it as guidance only.
Which pets are most at risk from Leek?: Our database flags Leek as toxic to: cats, dogs, horses.
What should I do if my pet eats Leek?: Remove remaining plant material, do not induce vomiting unless a vet instructs you to, and seek professional help immediately with the plant name ready.

Report an error or missing data

Help us keep this page accurate. You can report wrong toxicity ratings, missing plants, outdated photos or spelling mistakes.

Wrong toxicity for a cat, dog or horse
Missing or incorrect plant name
Better photo or source link
Additional veterinary or botanical reference

Include the plant name (Allium ampeloprasum), affected pet species and, if possible, a link to your source. We usually respond within a few business days.