Figure 1

Behaviour of domestic guinea pigs and wild cavies in one test of anxiety-like behaviour (A) and one test of social behaviour (B) during early and late adolescence. A): percentage of time spent in the light area of the dark-light test. B): time spent in contact with an unfamiliar infant in a male/infant interaction test. Data are shown as medians, 10th, 25th, 75th, and 90th percentiles; outliers are indicated by dots. Statistics: Mann–Whitney U-test (two-tailed), N_Domestic = 10, N_Wild = 8; * = p ≤ 0.05; ** = p ≤ 0.01. Redrawn after [32].