Mean dark matter profiles for haloes in 21 logarithmically spaced bins in mass between 3 × 10⁹ M_⊙ (orange) and 10¹⁴ M_⊙ (light blue), from the DMO (top) and FP runs (middle). Left to right: CDM, followed by two self-interacting models (vSIDM and SIDM1) and two WDM models (WDM3 and WDM1). We use the 50/A run in the first four panels and the WDM1 50/B box in the rightmost one. The latter only allows us to reliably measure density profiles of M_200c ≥ 10^10.5 M_⊙, with stronger limits on the spatial resolution. In all panels, the dashed vertical line stands for the resolution limit 3ϵ_DM. When fitting the density profile, we restrict the range further to r ≥ 3ϵ_DM and haloes with more than 1000 dark matter particles. Bottom: Ratio between the dark matter profiles in the FP and DMO cases, highlighting the contraction caused by baryons.