Katherine Dettwyler, PhD has done extensive research in the area of, «life - history variables (such as length of gestation, birth weight, growth rate, age at sexual maturity, age at eruption of teeth, life span, etc.) in non-human primates and then looked at how these variables correlate with age at weaning in these animals.» (themilkmeg.com)
teething causes dirrhea doesnot seem to be biological, babies having eruption of teeth do have itching and they tend to put any thing they happen to pick in their mouth, and this could be the reason that they have dirrhea during teething (wehavekids.com)