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May 1972 in “Canadian journal of zoology” Black-tailed deer have four types of pelages and molt twice a year.
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July 2020 in “BMC genomics” The research found genes that change during cashmere goat hair growth and could help determine the best time to harvest cashmere.
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April 2022 in “Animals” Outdoor living and omega-3 supplements improve rabbit fur quality.
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February 1968 in “Australian Journal of Zoology” The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.
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June 2025 in “Frontiers in Genetics” Key genes IRF2BP2 and EGFR are linked to Hetian sheep's double-coat fleece.
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July 2004 in “Journal of morphology” Marsupial hair structure and keratin distribution are similar to placental mammals.
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March 2018 in “Biological reviews/Biological reviews of the Cambridge Philosophical Society” Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.
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January 2016 in “Acta histochemica” Black sheep have higher levels of Gnαs and Gnα11 proteins, which may affect their coat color.
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January 2020 in “Research Square (Research Square)” Inherited color dilution in Rex rabbits is linked to DNA methylation changes in hair follicles.
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March 2019 in “Acta histochemica” Angiotensin II is found at higher levels in black sheep skin and may influence coat color.
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January 2021 in “Frontiers in genetics” Inherited color dilution in rabbits is linked to DNA methylation changes.
October 2025 in “International Journal of Advanced Multidisciplinary Research and Studies” Hairless dogs have unique skin adaptations to regulate temperature and protect against environmental factors.
May 2026 in “Preprints.org” Dark-coated cats are more stressed, and adoption reduces stress in cats.
January 2022 in “Mammalian Genome” The wavy coat in NCT mice is caused by multiple genes, including a mutation in the Prss53 gene.
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December 2018 in “Veterinary dermatology” The hair coat disorder in Schipperkes is similar to Alopecia X and involves increased androstenedione levels and hair cycle arrest.
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April 1965 in “General and Comparative Endocrinology” The pituitary gland controls seasonal fur color changes in weasels.
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June 2001 in “Journal of Zoo and Wildlife Medicine” The lemur's testicular tumor was removed, improving its coat and behavior, with no signs of cancer spread.
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March 1989 in “Proceedings of the British Society of Animal Production” Hormones and daylight changes control when cashmere goats shed their hair.
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March 1986 in “British Veterinary Journal” Canine skin has two main layers: the epidermis and dermis, with a supportive subcutis layer.
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August 1981 in “PubMed” Trichilemmal keratinization is a unique process in hair follicles where the outer root sheath turns into keratin without a specific layer.
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September 2004 in “Journal of Anatomy” The inner root sheath evolved to help hair grow safely through the skin in mammals.
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September 2007 in “Experimental Dermatology” The outer layer of Merino wool is rich in sulfur proteins, making it resistant to damage.
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January 2020 in “Veterinariya Zootekhniya i Biotekhnologiya” Long-haired cats have thinner skin where hair is thicker, and all have unique collagen patterns.
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May 1998 in “Acta agriculturæ Scandinavica. Section A, Animal science” Blue foxes born later in the season have a slightly delayed fur growth cycle, but it catches up by mid-November.