Dog ownership and healthy brain aging: a pilot study 1Department of Kinesiology, University of Massachusetts at Amherst, Amherst, MA, United States of America 2School of Biomedical Engineering, The University of British Columbia, Vancouver, British Columbia, Canada 3Human Magnetic Resonance Center, Institute for Applied Life Sciences, University of Massachusetts at Amherst, Amherst, MA, United States of America DOI 10.7717/peerj.21560 Academic Editor Catherine Myers Subject Areas Cognitive...