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Jane Lefler
Jane Lefler, Breeder,Behaviorist, formerVet Asst
Category: Dog
Satisfied Customers: 19766
Experience:  Former vol Vet Assistant.Breeder 18+ years Dog trainer / behaviorist
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why is my dogs poop black and watery and puking

Customer Question

why is my dog's poop black and watery and puking eveything she eats?
Submitted: 9 years ago.
Category: Dog
Expert:  Jane Lefler replied 9 years ago.
HiCustomer

Black or tarry looking stool indicates digested blood in the stool. Digested blood in the stool indicates bleeding in the stomach or small intestines. This is potentially a life-threatening situation and should not be ignored. You can read more about this and the potential causes at the following site:
http://www.petplace.com/dogs/melena-blood-in-stool-in-dogs/page1.aspx

Since your dog is also vomiting, this could indicate severe pancreatitis, intestinal obstruction or even peritonitis.
http://www.vetcentric.com/reference/encycEntry.cfm?ENTRY=23&COLLECTION=EncycIllness&MODE=full
http://www.petplace.com/dogs/gastric-stomach-foreign-body-in-dogs/page1.aspx
http://www.petplace.com/dogs/peritonitis-in-dogs/page1.aspx

As you can see these conditions can be life threatening, so I do urge you to have your dog seen as soon as possible.   Since she is vomiting, it is unlikely any medication could be kept down, but pepcid or Zantac might help. Be sure an let your vet know if you give either of these.. Read about Pepcid dosages and usage information here: http://www.petplace.com/drug-library/famotidine-pepcid/page1.aspx

Zantac can be given to a dog at .25 to 1mg per pound every 8-12 hours. Read about usage here:
http://www.petplace.com/drug-library/ranitidine-hcl-zantac/page1.aspx

I hope this helps.