The idea for this experiment arose when a young Mexican researcher, Laura Cuaya, left her native country in 2018 to join Hungary and start a post-doctorate. She had taken her border collie Kun-Kun and wondered, once in Budapest, what was going on in her head when hearing Hungarian speak for the first time. “I suggested to my managers to do brain imaging, and they accepted,” says the first author. of works published in Neuroimage. No less than eighteen dogs, aged 3 to 11, were recruited for this study and participate in this unprecedented experience alongside their Spanish or Magyar speaking owner. Six border collies, five golden retrievers, two Australian Shepherds, a cocker spaniel, a labradoodle (crossbreed of labrador retriever and poodle) and three dogs without breed.