Can dogs eat garlic?
UNSAFE Category: Vegetable · Source verified September 2026
Garlic is more concentrated in thiosulfate than onions, so smaller amounts can poison dogs — roughly 15 to 30 grams per kilogram of body weight reaches toxic territory. It destroys red blood cells and the anemia may take days to show. Watch for weakness and discolored urine rather than immediate stomach signs.
How much is dangerous?
- The AKC summarizes the underlying research as harmful changes to dogs’ blood at roughly 15–30 g of garlic per kg of body weight — dozens of cloves for a mid-size dog.
- Merck notes garlic is 3–5 times more toxic than onion weight-for-weight, so concentrated forms (powder, granules, seasoning mixes) lower the practical threshold.
- A single clove weighs only about 3–7 g, so one stolen clove is rarely the emergency — garlic powder and heavily seasoned food are the realistic risks.
Dose data: AKC: Can Dogs Eat Garlic? · Merck Veterinary Manual: Garlic and Onion Toxicosis.
Symptoms to watch for
- lethargy
- pale gums
- elevated heart rate
- red urine
- weakness
As with onion, signs are delayed — red-cell damage typically shows 3–5 days after ingestion.
If you suspect poisoning: call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 (available 24/7). Do not induce vomiting unless instructed by a professional.
Quick answers
Can dogs eat garlic?
No. Garlic is more concentrated in thiosulfate than onions, so smaller amounts can poison dogs — roughly 15 to 30 grams per kilogram of body weight reaches toxic territory. It destroys red blood cells and the anemia may take days to show. Watch for weakness and discolored urine rather than immediate stomach signs.
How much garlic is toxic to a dog?
The AKC summarizes the research as harmful blood changes at roughly 15–30 g of garlic per kg of body weight — dozens of cloves for a mid-size dog. Merck adds that garlic is 3–5 times more toxic than onion, so powdered and concentrated forms are the practical risk.
What are the symptoms if my dog eats garlic?
Watch for lethargy, pale gums, elevated heart rate, red urine, weakness. As with onion, signs are delayed — red-cell damage typically shows 3–5 days after ingestion. When in doubt, call your vet.
What should I do if my dog ate garlic?
Call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 right away. Do not wait for symptoms — early treatment is dramatically cheaper and safer.
Related foods
Can dogs eat onions? · Can dogs eat wild mushrooms? · Can dogs eat tomatoes? · Can dogs eat potatoes? · Can dogs eat pickles? · Can dogs eat carrots?
Source: ASPCA Animal Poison Control. This page is informational and is not veterinary advice.