Is it normal for pugs to change there color when they are young?

No, it is not normal for pugs to change their color as they grow older. Pugs are known for their distinctive fawn or black coats, and these coat colors typically remain consistent throughout their lives. While some pugs may experience slight variations in their coat color as they age, such as developing some areas of grey fur, these changes are usually minor and gradual. If you notice a dramatic change in the color of your pug's coat, it is recommended to consult with a veterinarian to rule out any underlying health conditions.