Notning like a bit of Netflix and Quill (Do you like what we did there)? On Hedgehog Quills, did you know Most mammals have fur or hair that is somewhat flexible and soft. But the hair on the back of a hedgehog is a thick layer of spikes (or modified hairs) known as quills.
These quills are made of keratin, the same stuff our hair and fingernails are made of. … Their belly, face, and neck are covered in coarse hair – perfect for tickling! – Image via @lionelthehog on Instagram