A hedgehogs spikes are known as his quills. Between the ages of 8 - 12 weeks old your hedgehog will go through a phase called quilling. This is when his quills fall out and his new ones grow. You will know this is happening as you will find quills in his bedding. During this period (which can last a week to a month) your hedgehog may be a little itchy, moody and sensitive to being touched. A way to help sooth it’s skin is to give it a bath.