guard hair
US /ˈɡɑːrd her/
UK /ˈɡɑːrd her/

1.
pelo de guarda, pelo de cobertura
the longer, coarser, and usually stiffer hairs that form the outer protective layer of a mammal's fur, covering the softer undercoat
:
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The wolf's thick guard hairs protect it from the harsh winter weather.
Os espessos pelos de guarda do lobo o protegem do rigoroso clima de inverno.
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The dog's coat consists of a soft undercoat and stiff guard hairs.
A pelagem do cão consiste em um subpelo macio e pelos de guarda rígidos.