Sheep can lose wool quickly due to stress, but it doesn't cause itching or pain.
10 citations
,
May 2017 in “Symmetry” Higher androgen levels are linked to less asymmetry in !Kung San males.
July 2023 in “Biomolecules” The new "whisker follicle microinjection assay" can test how different biomolecules affect hair growth and color.
April 2022 in “Our Dermatology Online” A woman had unusual hair growth on one side of her chin without a known cause.
20 citations
,
September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.