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I was just watching the pop news show - America Now. They had a story on how dangerous (even deadly) XYLITOL is to dogs. I guess that ingredient is found in almost every type of sugarless gum. The guy on the show lost his beautiful great dane to the poison.
http://www.snopes.com/critters/crusader/xylitol.asp
A Heads-Up From Palmersville.
PS: The guy thinks his dog ate some from the sidewalk on their daily 4-mile walk.
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