AUTHOR=Iotchev Ivaylo Borislavov TITLE=Commentary: Dog Stick Chewing: An Overlooked Instance of Tool Use? JOURNAL=Frontiers in Psychology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.692495 DOI=10.3389/fpsyg.2021.692495 ISSN=1664-1078