I Fed My Cat Barbecue Leftovers: Three Days Later, the Vet Revealed What the Onion Had Done to His Blood

I Fed My Cat Barbecue Leftovers: Three Days Later, the Vet Revealed What the Onion Had Done to His Blood

A Yorkshire tabby ate marinated barbecue skewers and fell critically ill within three days—all from the onion in the marinade. Onions attack a cat’s red blood cells at the molecular level, triggering hemolytic anemia and Heinz body formation. Here’s exactly what happens inside your cat’s body and why time is critical.