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This study examined vicuña skin and hair follicle structures, finding a high density of secondary hairs in fleece areas compared to belly and legs, and identified various types of cutaneous glands potentially important for chemical communication.

In this study, researchers analyzed alpaca skin morphology and found that type I and IV collagen are present in both the epidermis and dermis, while type III collagen is found only in the dermis.

Animal hair fibers like wool and mohair are strong when dry, but vicuna fibers are very brittle.

This study found that sarcoptic mange significantly decreased vicuña and guanaco populations in San Guillermo National Park, Argentina, likely originating from mange-infected llama introduced nearby, raising the risk of local extinction.

This study reports that a sarcoptic mange outbreak, likely originating from mange-infected llamas from a governmental program, dramatically reduced vicuña and guanaco populations in San Guillermo National Park, Argentina.