12 years old dog suddenly has black tarry stool

Thanks for your question. I understand why you're concerned about your dog's sudden change in stool appearance. Black, tarry stool, known as melena, often signifies digested blood and can indicate an issue in the upper gastrointestinal tract. Possible causes include ulcers, gastrointestinal tumors, ingestion of blood (perhaps from licking a wound or biting a toy too roughly), certain medications (like NSAIDs), or a bleeding disorder.



At home, ensure your dog is comfortable and not stressed. Provide a bland diet of boiled chicken and rice, but it's essential to address the root cause rather than manage symptoms alone. Keep your dog hydrated and ensure they aren't showing signs of anemia, such as pale gums or lethargy.



Please watch for any additional symptoms like vomiting, significant lethargy, loss of appetite, or continued black stools. These signs could indicate a more serious problem that requires immediate veterinary attention.



Given your dog's age and the potential seriousness of this issue, I strongly recommend booking a video consult with us at Dial A Vet. We can help determine the urgency of the situation and if immediate care is necessary. Your pet's health and comfort are our top priorities, and we’re here to help guide you through this.