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Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.

The conclusion is that understanding how feathers and hairs pattern can help in developing hair regeneration treatments.

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

Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.

Ancient Chinese goats evolved cashmere-producing traits due to selective breeding, particularly in genes affecting hair growth.

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

Hair loss increases between July and October, possibly due to UV light, and factors like skin type, hair color, and density may affect this. Dandruff can worsen hair loss conditions.

Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.

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

Inflammation around hair follicles leads to hair loss, and treatments should focus on reducing this inflammation and other factors for effectiveness.

Melatonin affects gene expression in goat hair follicles, potentially increasing cashmere production.

The conclusion is that a systematic approach is key for treating symmetrical alopecia in dogs, but treatment may not always be necessary.

Some horses lose hair without inflammation or itching due to various conditions, and while mainly a cosmetic issue, diagnosis requires examination and biopsies, and breeding is not advised if it's hereditary.

Essential oils may improve dogs' health and melatonin can help with their sleep and anxiety, but both should be used carefully.

The 60-second timed hair count is a reliable and simple way to measure hair shedding at home, showing older women tend to shed more hair than younger women.

The yeast found in a sea lion's skin lesion was almost identical to that on healthy skin, suggesting environmental factors may affect fungal growth and the cause of the lesion is unclear.

Hair loss peaks in spring and regrowth in late summer, with pregnant females losing the most hair.

The chapter explains causes of hair loss and excessive hair growth in animals.

Human skin responds to light with protective mechanisms, but more research is needed to understand these processes and their implications for health and therapy.

Older age increases positive hair alcohol test results, and chest hair is a good alternative for testing; season affects results, with higher levels in winter.

Many adult women experience unexplained excessive hair shedding, often starting before age 40.

Health issues in retired breeder guinea pigs don't affect experiment success.

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

Certain long non-coding RNAs are important for controlling hair growth cycles in sheep.

A mother's diet at conception can cause lasting genetic changes in her child.

Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.

Hormonal status significantly affects women's skin health throughout their lives.

Melatonin affects cashmere growth in goats by influencing stem cell and certain signaling pathways.

Melatonin can increase cashmere yield by altering gene expression and restarting the growth cycle early.

Laser hair removal is safe with the right settings, but side effects like pain and skin changes are more common in darker or tanned skin.