Is Batteries Toxic to Cats and Dogs?
Batteries are severely toxic to cats and dogs if punctured or swallowed. They cause corrosive burns and heavy-metal poisoning. Call a vet at once.
Potentially life-threatening — treat any exposure as an emergency.
Potentially life-threatening — treat any exposure as an emergency.
In an emergency, do not wait.
Medical disclaimer: This tool is for general information only and isnot a substitute for veterinary diagnosis or treatment. Toxicity depends on the amount, your pet’s size, and health history. If your pet may have ingested something harmful, contact your veterinarian or a poison control hotline ((888) 426-4435 / (855) 764-7661) immediately — do not wait for symptoms to appear.
What is Batteries?
Batteries are severely toxic to cats and dogs if punctured or swallowed. They cause corrosive burns and heavy-metal poisoning. Call a vet at once.
Also known as: alkaline battery, button battery, lithium battery, coin cell, disc battery, battery acid.
Symptoms to Watch For
🐕 In Dogs
- Drooling and pawing at the mouth from burns
- Red, raw, or ulcerated mouth and tongue
- Vomiting (possibly bloody) and abdominal pain
- Not eating, or difficulty swallowing
🐈 In Cats
- Drooling and pawing at the mouth
- Ulcers or redness in the mouth
- Vomiting and reduced appetite
- Difficulty swallowing
What to Do If Ingested
- Call a veterinarian or poison hotline immediately.
- Note the battery type (alkaline, button/coin, lithium) and whether it was chewed or swallowed whole.
- Do NOT induce vomiting — the corrosive liquid does more damage coming back up, and a battery can block the throat.
- Offer water or milk to rinse the mouth only if the pet can swallow normally.
Steps apply to both cats and dogs. When in doubt, call a vet or poison hotline before acting.
When to Call the Vet Immediately
Call your veterinarian or a poison control hotline right away if you notice any of these:
- A battery was chewed, punctured, or swallowed
- Drooling, mouth pain, or refusing to eat
- Vomiting, especially with blood
- Abdominal pain or lethargy
Frequently Asked Questions
Frequently Asked Questions
Why are batteries so dangerous if chewed?
When punctured, batteries release corrosive acid or alkali that burns the mouth, throat, and stomach. Button and coin batteries can also generate an electrical current against tissue, causing deep burns and holes. Heavy metals (zinc, and historically mercury or lead) add poisoning risk if the battery is digested.
What if my dog swallowed a battery whole without chewing it?
A whole battery can still be dangerous — it may lodge in the throat or intestines and cause a blockage, and button batteries can cause electrical burns while sitting in the stomach. Call a vet; do not induce vomiting, as the battery could get stuck or leak on the way back up.
Should I rinse my pet's mouth after a battery leak?
Offering water or milk to rinse can help if your pet can swallow normally, but never force it, and do not induce vomiting. The corrosive liquid causes more damage coming back up. Call a vet immediately — mouth burns can be deep even when they look mild on the surface.
Sources
This entry is reviewed against the following authoritative veterinary sources.
Last reviewed: 2026-07-11