What does it mean when dog pees blood and won't eat and very lazy?

When a dog is peeing blood, refusing to eat, and exhibiting lethargy, it may indicate a serious health issue such as a urinary tract infection, kidney stones, or other internal problems. These symptoms suggest that the dog is likely in pain or discomfort and requires immediate veterinary attention. Prompt diagnosis and treatment are crucial to address any underlying conditions and ensure the dog's well-being.