Why it's dangerous
When punctured or swallowed, batteries leak corrosive materials that cause chemical burns and tissue injury to the mouth, esophagus, and gastrointestinal tract.
Toxic compound: Alkaline or acidic material
Good to know
Ulcers in the mouth may not be visible for several hours after ingestion or puncture. Lithium and button batteries are particularly dangerous.
Sources
This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.