Guinea pigs can lose hair due to infections or poor diet, and they may have ear infections or cataracts.
June 2023 in “Journal of Pharmaceutical and Health Research” Caffeine hair tonic with 0.001% concentration was more effective in promoting hair growth on guinea pigs.
February 2019 in “Veterinarski glasnik” Guinea pigs' skin issues in the lumbar area may be caused by dermatological problems and need proper care.
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February 2017 in “International journal of developmental neuroscience” Female guinea pigs exposed to less allopregnanolone before birth showed more anxiety-like behavior.
January 2007 in “Pizhūhish va sāzandigī” Hairless guinea pigs are useful for research in allergies, skin tests, and diseases.