AUTHOR=Bombail Vincent , Brown Sarah M. , Hammond Tayla J. , Meddle Simone L. , Nielsen Birte L. , Tivey Emma K. L. , Lawrence Alistair B. TITLE=Crying With Laughter: Adapting the Tickling Protocol to Address Individual Differences Among Rats in Their Response to Playful Handling JOURNAL=Frontiers in Veterinary Science VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2021.677872 DOI=10.3389/fvets.2021.677872 ISSN=2297-1769