Figure 1.

Fecal scoring system. Grade 0 represents normal marmoset feces. Grade 1 feces are more moist than normal but still formed. Grade 2 feces are beginning to lose form and are moister than grade 1 material. Grade 3 fecal material is diarrhea that has lost much of its form and is very watery with a soft consistency. Grade 4 indicates a further continuation of this process, with loss of almost all of the fecal form. Grade 5 represents severe, watery diarrhea with complete loss of formed feces.