Dataset for the manuscript: "Inexperienced preys know when to flee or to freeze in front of a threat” (Accepted for publication in PNAS in October 2019). The file contains: 1/ Data related to Experiment 1 (Looming vs Sweeping stimuli): ‘Speed during (%)’, ‘Speed after (%), ‘Distance traveled during the 30 s following the stimulus offset’ 2/ Data related to Experiment 2 (Looming vs Receding stimuli): ‘Speed during (%)’, ‘Speed after (%), ‘Distance traveled during the 30 s following the stimulus offset’ 3/ Data related to Experiment 3 (Looming vs Dimming stimuli): ‘Speed during (%)’, ‘Speed after (%), ‘Distance traveled during the 30 s following the stimulus offset’ 4/ Data related to the determination of the initiation of the escape in response to the looming stimulus (point by point % of point speed variation during the looming displays)

This work was supported by the European Research Council (ERC) FP7/2007-2013 Grant ERC-2011-ADG_20110406, Project 461 295517, Predisposed mechanisms for social orienting (PREMESOR) (to G.V.). Support from Fondazione Caritro Grant Biomarker Disordini dello Spettro Autistico - Autism Spectrum Disorders (DSA) [40102839] and Progetti di Ricerca di Interesse Nazionale (PRIN) 2015 (Neural Bases of Animacy Detection and Their Relevance to the Typical and Atypical Development of the Brain) to G.V. is also acknowledged. E.V. was supported by the Royal Society Research Grant RGS\R1\191185.