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Black-tailed deer have four types of pelages and molt twice a year.

Mouflon rams mature gradually with changes in body, horns, and hormones linked to age and seasons, reaching full sexual maturity well after puberty.

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.

Removing mink's adrenal glands causes their summer fur to grow earlier.

Adrenal glands delay the start of winter fur growth in mink.

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.

Melatonin implants and long daylight hours alter the timing of hormone release and hair growth in mouflon sheep.

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

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

Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.

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.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Androgens can both increase and decrease hair growth in different parts of the body.

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

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

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

Three dogs with a rare skin condition improved with treatment.

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.

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

Dog hair grows back in about 14 weeks after being clipped for surgery, and the season doesn't really affect this growth rate.

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

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

Both mouse and rat models are effective for testing alopecia areata treatments.

Melatonin and mitotane treatment led to hair re-growth in 62% of dogs with Alopecia X, but this was not always linked to normal hormone levels.

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

Young female Australian fur seals are losing hair due to low tyrosine and zinc levels and high pollution exposure.

Boxer and Labrador dogs' hair growth is affected by the tropical climate, but Schnauzers' is not.

Hair follicles and deer antlers regenerate similarly through stem cells and are influenced by hormones and growth factors.

The study concluded that changing the culture conditions can cause sika deer skin cells to switch from a flat to a 3D pattern, which is important for creating hair follicles.

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