This database contains supplementary material for our manuscript "Genetic structure of the European hedgehog (Erinaceus europaeus) in Denmark": S1 Fig/Figure 1a. Box plot of the individual heterozygosity (iHO) estimated for the six populations S2 Fig/Figure 1b. Plot of the iHO values ranked from the lowest to the highest values within each population S3 Fig/Figure 2. Likelihood plot of STRUCTURE results S4 Fig/Figure 3. Likelihood plot of STRUCTURE results (for separate populations) S5 Fig/Figure 4. Principal Component Analysis S1 Table/Table 2. Overview of individuals for genetic sampling S2 Table/Table 3. Dataset from GENEPOP S3 Table/ Table 4. Data for fragmentation analyses S4 Table/Table 1. Tukey’s test matrix for testing pairwise significant differences of the mean iHO between the six populations