My lovely 11-year-old cat has always been a bit odd - that's why we love her! For years she has done this weird thing - if she is sitting near me and I file my nails with an emery board, she licks her lips, then retches, but isn't sick. The other day, she did it again when I tipped a bag of jewellery onto the bed that had lots of chains and jangly stuff.
Obviously I don't file my nails near her any more, because I worry she's actually upset by the sound it makes, but why that sound? It's fascinating, but - weird.