The origin of dark matter and the matter-antimatter asymmetry of the Universe may be explained by the existence of GeV-scale dark sector particles carrying baryon number. The interactions of such dark baryons with first-generation quarks are known to have implications for collider experiments, neutron stars, and the lifetime of the neutron. In this talk, I will focus on the phenomenology of dark baryon interaction with b and s quarks. This includes a testable model of low-scale baryogenesis, exotic decays of B mesons and strange baryons, core-collapse supernova explosions, and new physics searches at the LHC and flavour physics experiments.