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Why cant dogs eat onion2007-11-25 2:55:45Answers:

It causes hemolytic anemia in monkeys, cats, and dogs.> http://www.jlhweb.net/boxermap/onions.ht...

Onion toxicity causes a Heinz body anemia. Heinz bodies are small bubble-like projections which protrude from a red blood cell and can be seen when the cells are stained. This "bubble" is a weak spot in the red blood cell and, therefore, the cell has a decreased life-span and ruptures prematurely.

If numerous red cells are affected and rupture, anemia can result. It is a form of hemolytic anemia. Onions are only one of the substances which can cause Heinz body anemia. Other substances such as Acetominophen (Tylenol) and benzocaine-containing topical preparations can also cause Heinz body anemia in the dog.

The toxic effect of the onions are the same whether the product is raw, cooked or dehydrated. The hemolytic episode usually occurs several days after onion ingestion (lowest hematocrit around day 5 post ingestion).

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They can, my dog eats anything he finds.

Actually though, they do tell you not to. Here's a web page all about it:

http://www.vetinfo4dogs.com/dtoxin.html#...

and Another:

http://www.jlhweb.net/boxermap/onions.ht...

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they dont like them

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Not sure of the reason. It's just one of those things, like chocolate, that is harmless to humans but can be harmful to dogs.

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My dog eats onions that are sauteed .

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They can, they just do not like it but they do love raw garlic

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dogs don't eat any vegetable not just onions.

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The chemical in onion is toxic to a dog causing upset stomach and hemolytic anemia.