1 Max Planck Institute for Chemical Ecology, Jena 07745, Germany; College of Life and Environmental Sciences, University of Exeter, Penryn TR10 9FE, UK. Electronic address: cheyworth@ice.mpg.de.
2 Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
3 Max Planck Institute for Chemical Ecology, Jena 07745, Germany. Electronic address: hrowland@ice.mpg.de.
What causes an animal to resist trying new food or incorporating it into their diet? In this Quick guide, Heyworth et al. discuss the phenomenon known as dietary wariness.