  For neutron stars, there exist universal relations insensitive to the
equation of states, the so called I-Love-Q relations, which show the
connections among the moment of inertia, tidal Love number and quadrupole
moment. In this paper, we show that these relations also applies to dark stars,
bosonic or fermionic. The relations can be extended to a higher range of the
variables, as those curves all approximate the ones generated by a polytropic
equation of state, when taking the low density (pressure) limit.
