Why it's dangerous
Matches contain oxidizing agents like potassium nitrate and chlorate, along with heavy metals, which cause oxidative damage to blood cells and direct irritation to the gastrointestinal tract and kidneys.
Toxic compound: Potassium chlorate
Good to know
The severity of symptoms is dose-dependent; large ingestions can lead to multi-organ failure and neurological signs.
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.