Dogs have been known to eat everything from diamond rings to rocks and even steak knives, say veterinarians in Green Bay, Wis. Vomiting, loss of appetite, diarrhea and fatigue may be symptoms that a dog swallowed something he shouldn't have. Often, veterinarians can retrieve the items by inducing vomiting, but sometimes surgery is necessary to retrieve non-food snacks that are obstructing the digestive tract.

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