Like onions, garlic contains compounds that damage red blood cells. Garlic is more concentrated, so a smaller amount can cause harm, and garlic powder, garlic bread and garlic butter are common sources. The AKC lists garlic as toxic to dogs and notes symptoms may be delayed. There's no good evidence that garlic repels fleas; use a vet-recommended flea product instead.
No: toxic
No. Garlic is in the onion family and is more potent than onion. It can damage dogs' red blood cells and cause anaemia, and signs may be delayed by several days. Don't give garlic as a flea remedy or supplement.
This guide is general information, not a diagnosis. If your pet seems unwell, or you're worried, call your vet.
Why garlic is dangerous for dogs
If your dog ate some
- Call your vet, an emergency clinic or a pet poison line straight away, even if your pet seems fine. Many poisonings are easier to treat before signs appear.
- In the US: ASPCA Animal Poison Control (888) 426-4435 or Pet Poison Helpline (855) 764-7661. Both may charge a consultation fee.
- Note what was eaten, roughly how much and when, and keep the packaging.
- Don't make your pet vomit unless a vet tells you to; it isn't always safe.
- Use our onion and garlic calculator, and call your vet for anything more than a trace.
- Your vet may induce vomiting if it was recent and check blood counts over the following days.
Signs to watch for
- Vomiting, diarrhoea or drooling
- Pale gums
- Weakness and lethargy
- Fast breathing
- Red or brown urine
- Signs may start several days later
Collapse, seizures, difficulty breathing or pale gums are emergencies: go to the nearest vet straight away.
Other foods for dogs
Also no: toxic
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Sources
We check guides against veterinary sources and update them when guidance changes. How we write and review.
Questions.
Is the small amount of garlic in dog treats safe?
Some commercial treats contain small amounts of garlic. Most vets would rather dogs avoided it, especially small dogs and breeds that are more sensitive.
Does garlic keep fleas off dogs?
There's no reliable evidence it does, and it risks poisoning. Use a proven flea treatment.
