"Chuck" wrote in message
...

It's not. It's hair. It'll stink, but it's not toxic. Ask the
gazillions of porcupines that eat them.

Costs no more to get it right.

Bone.
http://www.usask.ca/wcvm/herdmed/spe...0Calcification

Most permanently horny animals have cuticle "horns".

Rhinos have a detached "horn" similar to hair.