We have had a bull mastiff for two days, he is eight weeks old, he has got very smelly breath, is this normal?

Young pups often do have smelly breath, and this is often due to the food they are eating, but it will get less and less over the next few weeks. As long as there is no obvious sing of problems with his teeth, or mouth in general, then don't worry, this will soon go away. You can actually but chews that help to keep their breath fresh!.