Garlic
DangerousGarlic is toxic to dogs, 5x more potent than onions.
Toxicity Level
7/10Why It's Dangerous
Damages red blood cells leading to anemia. All forms are dangerous.
The Science
Thiosulphates (allicin, diallyl disulfide)Garlic is a member of the Allium family and contains higher concentrations of organosulfur compounds than onions. Allicin and diallyl disulfide are the primary toxins, which cause the same oxidative red blood cell damage as onions but at lower doses. The compounds damage the hemoglobin inside red blood cells, forming Heinz bodies and eccentrocytes, leading to hemolytic anemia. Signs may not appear immediately — it can take 3-5 days for anemia to develop after ingestion.
Sources
- •ASPCA Animal Poison Control Center
- •Journal of the American Veterinary Medical Association
- •Veterinary Clinics of North America
Dosage & Thresholds
Garlic is roughly 3-5x more toxic than onion per gram. The toxic dose is approximately 5g of garlic per kg of body weight. One clove of garlic weighs about 3-7g, so 2-3 cloves could be dangerous for a 10kg dog. Garlic powder is more concentrated. Note: some holistic sources claim garlic is beneficial for dogs in small amounts — veterinary consensus considers this unsafe.
Symptoms to Watch For
If your dog has ingested garlic
Contact your veterinarian or an emergency animal poison hotline immediately. Do not induce vomiting unless instructed by a vet.
callFind Emergency Vet