My dogs poop is black like diarrhea and smells so bad
Black stool in dogs could mean two things; your dog food is having too much liver in it (liver as food usually colors the stool; it's not recommended to over use it in food), or his stool contains blood.
Blood in stool may occur due to various causes like parasites, food, hemorrhagic gastroenteritis, rectal wounds, parvovirus and even stress. When occurred with vomit and diarrhea, it is very important to visit a vet as dehydration can become very serious very quickly.
As treatment can vary greatly depending on the cause, you should visit a vet clinic for consultation and diagnostic testing.
All the best for you and Whitny.
Note: This is an automatic answer provided by artificial intelligence previously reviewed by our veterinarians. In case of urgency, we recommend you to contact your veterinarian as soon as possible.