What can rodents teach us about empathy?

While many consider empathy an exclusively human trait, non-human animals are capable of simple forms of empathy, such as emotional contagion, as well as consolation and helping behavior. Rodent models are particularly useful for describing the neuronal background of these phenomena. They offer the possibility of employing single-cell resolution mapping of the neuronal activity as well as novel techniques for manipulation of in vivo activity, which are currently unavailable in human studies. Here, we review recent developments in the field of rodent empathy research with special emphasis on behavioral paradigms and data on neuronal correlates of emotional contagion. We hope that the use of rodent models will enhance our understanding of social deficits in neuropsychiatric disorders characterized with empathy impairments and the evolutionary continuity of the empathic trait.