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This is bad - black vomit tends to indicate a bleeding problem in the upper gastrointestinal tract. At a minimum, you should have your dog checked by a veterinarian within the next day to see what is causing the vomiting.

Depending upon the age of the dog and what environment it is in, the problem could be anything from a sharp foreign body (like a stick) to infection to cancer.

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12y ago

What else can I help you with?