Dr. Wilkins

Dr.Tail Vet

It sounds like your Shih Tzu is experiencing some very concerning symptoms. When you notice bloody or black diarrhea, combined with vomiting, a loss of appetite, and shaking, it can indicate a serious condition that requires immediate attention. These symptoms might be due to various causes, such as gastrointestinal infections, ingestion of toxins, or other underlying health issues.

Given the severity and combination of these symptoms, I strongly recommend that you seek veterinary care as soon as possible. The presence of blood in the diarrhea, along with your dog shaking and curling into a ball, suggests that he might be in pain or distress, which needs professional evaluation and treatment.

In the meantime, it's important to ensure your dog stays hydrated, as diarrhea and vomiting can quickly lead to dehydration. You can offer small amounts of water frequently, but it's best to avoid giving any food until a veterinarian has assessed him.

Please take your dog to a veterinary clinic or emergency animal hospital without delay to ensure he receives the necessary care. If you have any further questions, please feel free to ask. Thank you.