Barbs make porcupine quills into nasty needles : Nature News & Comment

Porcupines have no defence against the quill trade – letting

10Pcs Porcupine Quills DIY Fish Float Hair Stick Hair Craft Fishing Bobber

Pit Bull Dies After 2 A.M. Tussle With Porcupine Leaves Quills

Police K-9 dog struck by 200 porcupine quills during pursuit in

Ruckus' Run-in with a porcupine

African Porcupine Quills African Crested Porcupine Quills

Do Porcupines Shoot Their Quills? (Fact Check) 4 Defense Behaviors

What animals can kill porcupines and how do they do it? How can they get past the quills? - Quora

Ol Pejeta Conservancy - Did you know porcupine quills have long been considered a good-luck charm in Africa? Their quills are in fact hollow and have been used to store gold dust.

KYW Medical Report: Using porcupine quills to patch up wounds