Animal creativity: cross-species studies of cognition / / Kendra S. Knudsen, David S. Kaufman, Stephanie A. White, Alcino J. Silva, David J. Jentsch and Robert M. Bilder : Background ; Three themes of creative cognition ; Novelty generation in song birds ; Working memory in "smart" mice ; Response inhibition in rodents ; Commentary : Cross-species studies of cognition /Oshin Vartanian