Garlic

Poisonous to+

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cats, dogs

Level of toxicity+

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Generally mild to moderate

Common signs to watch for+

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Drooling
Nausea
Oral irritation
Vomiting
Diarrhea
Lethargy
Abdominal pain
Elevated heart rate and respiratory rate
Weakness
Exercise intolerance
Collapse
Pale gums

Description+

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Onions, garlic, chives, and leeks are of the Allium family, and are poisonous to both dogs and cats. Garlic is considered to be about five times as potent as onions. Certain breeds and species seem to be more sensitive: Japanese breeds of dogs (e.g., Akita, Shiba Inu) and cats. Onion and garlic poisoning results in oxidative damage to the red blood cells (making the red blood cells more likely to rupture) and gastroenteritis (e.g., nausea, oral irritation, drooling, abdominal pain, vomiting, diarrhea). Other clinical signs of anemia may be seen, and include lethargy, pale gums, an elevated heart rate, an increased respiratory rate, weakness, exercise intolerance, and collapse. Onion and garlic poisoning may have a delayed onset, and clinical signs may not be apparent for several days. While minute amounts of these foods in some pets, especially dogs, may be safe, large ingestions can be very toxic.

If you suspect your dog or cat have onion poisoning or garlic poisoning, call your veterinarian or Pet Poison Helpline for treatment recommendations.

Alternate names+

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Allium, Alliaceae, chives, leeks, disulfides, thiosulfates, anemia, onions

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Garlic

Pictured: Garlic