article_snippet: the cats' were played clips of music through headphones while undergoing surgery, shown above, a heart monitor attached to the cats' tongue measured the cats' pulse and scientists recorded the diameter of the cats' pupils .
article_snippet: In a bizarre set of experiments, researchers fitted headphones to cats ears so researchers could listen to music while undergoing surgery at a veterinary clinic in Portugal.
article_snippet: The scientists played two-minute bursts of classical, pop and rock music to the animals and measured The scientists reaction while under anaesthesia.
article_snippet: The researchers played environmental music to 12 cats while The researchers were undergoing neutering surgery through headphones.
article_snippet: The researchers attached a heartbeat monitor to the animals' tongue, measured The researchers respiratory rate and pupil diametre.
article_snippet: 12 cats were exposed to two minutes of silence followed by random clips of music.
article_snippet: The researchers now hope to look at how music might impact other animals including dogs.
highlights_snippet: Scientists at the University of Lisbon, Portugal, fitted headphones to cats .
  
highlights_snippet: Scientists at the University of Lisbon, Portugal, fitted headphones to cats .
   recorded the cats' breathing and pupil size while undergoing surgery .
  