January 2022 in “Mammalian Genome” The wavy coat in NCT mice is caused by multiple genes, including a mutation in the Prss53 gene.
56 citations
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January 1970 in “Cell and Tissue Research” 
June 2021 in “International journal of research in dermatology” A boy and his father with hereditary hypotrichosis simplex were treated for hair loss, but the treatment result is unknown.
53 citations
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July 2002 in “Journal of Investigative Dermatology” The Dfl mutation in mice causes poor sebaceous gland function and complete hair loss.
9 citations
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July 2008 in “Archives of Dermatological Research” 
28 citations
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May 2017 in “Molecular ecology” Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.
31 citations
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November 1965 in “Journal of Mammalogy” The pituitary gland is crucial for normal mink fur cycles.
67 citations
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September 2017 in “Cell Reports” Caloric restriction improves skin and fur structure but can cause muscle loss and movement issues.
41 citations
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January 2001 in “Journal of Investigative Dermatology” 11 citations
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January 2015 in “Journal of cellular physiology” HR protein causes abnormal hair cycles by increasing Tgf-β2 and reducing miR-31.
33 citations
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September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
Otter rabbit, mink, and blue fox fur can be identified by their unique hair structures.
A 5-year-old girl has sparse, dry, and brittle hair but is otherwise healthy.
November 2022 in “Brazilian journal of veterinary pathology” The Yorkshire terrier has a genetic hair loss condition not improved by treatment.
80 citations
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March 2004 in “Neuropediatrics” Coats' Plus is a genetic disorder with eye abnormalities, brain calcification, poor growth, bone and skin issues, and movement disorders.
15 citations
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January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
15 citations
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October 1976 in “Biochemical Journal” Naked-mouse hair lacks certain proteins and has less soluble fibril.
13 citations
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January 2001 in “Pediatric dermatology” A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.
August 2004 in “Veterinary Dermatology” More research is needed to understand coat funk in Alaskan malamutes.
15 citations
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December 1972 in “Journal of Investigative Dermatology” 42 citations
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September 2003 in “Journal of Investigative Dermatology” A missing mK6irs1 gene causes hair loss in mice.
January 2006 in “Advances in developmental biology” The Hairless gene is crucial for healthy skin and hair growth.
27 citations
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November 1991 in “Journal of Investigative Dermatology” 25 citations
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May 1972 in “Canadian journal of zoology” Black-tailed deer have four types of pelages and molt twice a year.
August 2004 in “Veterinary Dermatology” Adult-onset hair loss in Chesapeake Bay retrievers may be linked to abnormal adrenal hormone production.
February 2023 in “Cosmoderma” Loose anagen hair syndrome causes easily shed hair but usually improves with time.
31 citations
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September 1996 in “Differentiation” The upper dermal sheath can regenerate hair in rats.
3 citations
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January 2019 in “Jikken doubutsu ihou/Jikken doubutsu/Experimental animals/Jikken Dobutsu” Pigs without the Hairless gene showed skin and thymus changes, useful for studying human hair disorders.
78 citations
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May 2012 in “Journal of Investigative Dermatology” A specific gene mutation causes woolly hair and hair loss.
August 1969 in “Archives of Dermatology” After calciphylaxis, rats showed incomplete skin and hair regeneration, resembling scar tissue with fewer hairs.