Zinc toxicosis from ingesting pennies minted after 1982 or zinc-containing ointments causes life-threatening hemolytic anemia in dogs, with prevention through household awareness being the critical welfare intervention.
Zinc toxicosis is a preventable welfare emergency caused by a common household item - the penny - that dogs readily ingest. The disease progression from ingestion to hemolytic crisis is rapid, making prevention more effective than early treatment in many cases. Pet-proofing the home for coins, especially for households with small dogs, eliminates the exposure pathway entirely. The severity of illness relative to the size of the trigger (one penny) underscores how unexpected household toxicosis can be devastating.