We use stool charts to help consistently describe stool.
Besides shape, consistency, and size, other characteristics to consider include:
- Color
- Odor
- Frequency
- Floating vs. sinking
- Mucus
- Undigested food
There are separate charts for adults and diapered infants.
The two we use in our practice are:

http://cdn.intechopen.com/pdfs-wm/46082.pdf
