Levels of stress hormone in saliva of newborn deer fawns may predict mortality

The first-ever study of the levels of the stress hormone cortisol in the saliva of newborn white-tailed deer fawns yielded thought-provoking results that have researchers suggesting predation is not the only thing in the wild killing fawns.

source https://www.sciencedaily.com/releases/2021/01/210111190104.htm