  In $\rm\Lambda$CDM cosmology, Dark Matter (DM) and neutrinos are assumed to
be non-interacting. However, it is possible to have scenarios, where
DM-neutrino interaction may be present, leading to scattering of DM with
neutrinos and annihilation of DM into neutrinos. We investigate the viability
of such scenarios in the light of cosmological data by making use of the
PLANCK-2018 and BOSS-BAO 2014 dataset and constrain these processes in the
light of the same. We also discuss a particle DM model where DM-neutrino
interaction is present, and map the constraints to the parameter space of the
model.
