Can dogs eat Onion?
Quick Answer:
Avoid completely. Onions contain compounds that destroy a dog's red blood cells, causing severe anemia.
Why it matters:
Onions in all forms (raw, cooked, dehydrated, or powdered) contain thiosulfate. Dogs lack the enzyme to digest this compound, which causes oxidative damage to red blood cells, leading to a condition called Heinz body anemia. Powdered onion is particularly concentrated and dangerous.
What to check on the label:
- •Onion powder in spice blends, broths, and gravies
- •Cooked onions in human food leftovers
- •Shallots, chives, and leeks
Symptoms to watch for:
- •Pale gums (due to lack of oxygen)
- •Lethargy, weakness, and rapid breathing
- •Reddish or brown-tinted urine
- •Vomiting and diarrhea
When to contact a veterinarian:
Contact a veterinarian if your dog consumed foods containing onion or onion powder, especially if they show signs of lethargy, pale gums, or colored urine.
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