Onion and garlic toxicity in dogs

By
✔ MRCVS
BVMS
Updated October 16, 2025
4 min read

Overview

Symptoms

Risk

Diagnosis

Vet treatment

Home treatment

Prevention

Safe treat alternatives for dogs

When to worry

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Onion and garlic toxicity in dogs

By
✔ MRCVS
BVMS
Updated October 16, 2025
4 min read

Onion and garlic toxicity in dogs is fairly uncommon; however, symptoms can be severe so it’s important to be aware of the risks. Most dogs recover well without any long-term problems from onion and garlic toxicity.

Contact a vet straight away if your dog has eaten onions or garlic, no matter the quantity. Your vet will determine if any further treatment is necessary, depending on how much was eaten and what size your dog is. Any age of dog can develop poisoning. The most common symptoms are due to irritation of the mouth and tummy.

What is onion and garlic toxicity in dogs? >What is onion and garlic toxicity in dogs? [Overview

Symptoms of onion and garlic toxicity in dogs >Symptoms of onion and garlic toxicity in dogs [Symptoms

Are some dogs more at risk of onion and garlic toxicity? >Are some dogs more at risk of onion and garlic toxicity? [Risk

How is onion and garlic toxicity diagnosed in dogs? >How is onion and garlic toxicity diagnosed in dogs? [Diagnosis

Vet treatment for onion and garlic toxicity in dogs >Vet treatment for onion and garlic toxicity in dogs [Vet treatment

Home treatment for onion and garlic toxicity in dogs >Home treatment for onion and garlic toxicity in dogs [Home treatment

Tips on how to prevent onion and garlic toxicity in dogs >Tips on how to prevent onion and garlic toxicity in dogs [Prevention

Safe treat alternatives for dogs

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When to worry about onion and garlic toxicity in dogs >When to worry about onion and garlic toxicity in dogs [When to worry

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