12 citations,
July 2015 in “Veterinary Dermatology” Microneedling helped two Pomeranian dogs with a hair growth disorder grow back 90% of their fur in 12 weeks, and the results lasted for a year.
August 2018 in “Journal of Investigative Dermatology” Humans evolved to have less hair and more sweat glands than chimpanzees and macaques.
15 citations,
July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
10 citations,
March 2015 in “American journal of primatology” Ingesting Leucaena leucocephala caused hair loss and increased infant mortality in ringtailed lemurs.
120 citations,
November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.