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Adult male raccoon dogs shed their winter fur in spring and grow new fur for winter in autumn.

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.

Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.

Hair growth is influenced by hormones and goes through different phases; androgens can both promote and inhibit hair growth depending on the body area.

Androgens can cause hair growth in some areas and hair loss on the scalp.

Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.

Chronic exposure to sunlight may worsen male pattern baldness and protecting the scalp from the sun could slow it down.

Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.

Different hair growth problems are caused by genetic issues or changes in hair growth cycles, and new treatments are being developed.

Some plant-based chemicals may help with hair growth, but more research is needed to confirm their effectiveness.

Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.

Prolactin speeds up hair growth and moulting in cashmere goats.

The farm-raised blue fox had a delayed winter coat cycle and abnormal hormone levels, but its hair growth and hormone changes were still linked.

Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.

Cashmere and milk goats have different hair growth cycles and gene expressions, which could help improve wool production.

The article concludes that better understanding gene regulation related to seasonal changes can offer insights into the mechanisms of seasonal timing in mammals.

Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.

Melatonin implants can change the seasonal prolactin levels and hair growth in adult cashmere goats but not in juveniles, and don't delay spring moult for better fiber harvesting.

Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.

Artificially inducing hair regrowth in mice can change the normal pattern and timing of hair growth, with minimal color differences between old and new fur.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.

Environmental factors at different levels control hair stem cell activity, which could lead to new hair growth and alopecia treatments.

Healthy women tend to lose more hair in July and April, and the least in February.

Red deer only have androgen receptors in neck hair cells for mane growth during breeding season.

The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.

Changing light exposure can affect hair growth timing in goats, possibly due to a key gene, CSDC2.

Melatonin treatment speeds up fur maturation and changes the hair growth cycle in young chinchillas.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Timing of light therapy affects horse coat growth, with photoperiod being crucial.