I have a cocker spaniel and whenever we walk in the countryside I am amazed by her ability to sniff among the nettles in the hedgerows. I can understand a deep furry coat being impervious to nettles, but a damp, sensitive, hairless nose? Any suggestions as to how this phenomenon occurs?
Michael Turton
Post your answers – and new questions – below or email them to nq@theguardian.com