Get Your Dog Care Questions Answered by Experts
Black stools usually indicate that there is a bleed somewhere high up in the intestinal tract. If you are seeing black, tarry stools, you need to see the vet to have the dog checked.
This could also be a product of a parasite problem and your vet can rule this out with a fecal.
The nose is not a good indicator of health. It can be warm, cold, wet or dry and it does not mean much.
Let me know if you still have questions.