Cortisol in shelter dog hair shows signs of stress (IMAGE)
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For the cortisol measurements, hair from the same location on the body was used every time. The researchers shaved the area and allowed new hair to grow during the period in which they wanted to measure the stress hormones. This is called a 'shave-reshave method'.
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Photo: Janneke van der Laan
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Credit: Janneke van der Laan
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