Of all the hair on the human body, the whiskers are among the toughest and most resilient, being as hard to cut as a copper wire of equivalent thickness.
ويُعتبر شعر اللحية اقسى الشعر الموجود في جسم الانسان وأكثره صلابة ،‏ ويماثل قطعه قطع سلك نحاسي يساويه سُمكا .‏