Dog Ate Worcestershire Sauce — What to Do Immediately

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The delayed onset of hemolytic anemia from Allium toxicity creates a dangerous false sense of security. Dogs that eat foods containing garlic or onion powder often seem perfectly normal for 1-3 days before showing signs of anemia. This delay occurs because it takes time for enough red blood cells to be destroyed to cause detectable symptoms. By the time pale gums lethargy and weakness appear significant damage has already occurred. This is why veterinarians recommend treatment before symptoms appear when significant Allium exposure is confirmed.