- Baby porcupines are called "porcupettes"
- The common porcupine is a good swimmer, its hollow quills help keep it afloat
- Native Americans used to kill porcupines for their quills which they dyed and used to decorate clothing, jewelry and other items. Nowadays, they corner a porcupine and tap its back with a Styrofoam paddle to collect all the quills they need.
- A group of porcupines is called a "prickle"