The stool is sausage-shaped and smooth, consistent with Bristol type 4. The color is normal brown. Overall, this appears to be a healthy stool.

This is a normally formed brown stool, corresponding to Bristol type 3. It generally appears healthy, but the presence of excess water might indicate minor changes in digestion. Consider increasing fiber intake and moderating fluid consumption.

This is a healthy brown stool, corresponding to Bristol type 2. It has some lumps but is generally soft. Maintain normal bowel habits.

This is a healthy brown stool, corresponding to Bristol type 3. It is slightly lumpy but soft-formed. Increasing fiber intake would be beneficial.