Hi. Yesterday we noticed that our dog's poop had gone black. Texture is normal. I'm aware that this could be an upper GI tract bleed and I will be phoning the vet first thing tomorrow morning for an appointment. He is eating ok and seems fine in himself. He gets naturo dog food and some dried tripe sticks in the evening as his evening treat. I'm obviously really concerned but just wondered if anyone has has this issue and what it turned out to be. Thanks.