About the Authors

Annika Paukner

pauknera@mail.nih.gov

Affiliation Laboratory of Comparative Ethology, NIH Animal Center, Poolesville, Maryland, United States of America

Pier F. Ferrari

Affiliation Dipartimento di Neuroscienze and Dipartimento di Biologia Evolutiva e Funzionale, Universita di Parma, Parma, Italy

Stephen J. Suomi

Affiliation Laboratory of Comparative Ethology, NIH Animal Center, Poolesville, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AP PFF SJS. Performed the experiments: AP PFF. Analyzed the data: AP. Wrote the paper: AP PFF SJS.