ANNIE examines the interactions between neutrinos and nuclei in water with the aim of producing measurements of final state neutron abundance as a function of total momentum transfer. Neutron capture is aided by the solvated gadolinium salts which have high neutron capture cross sections and emit around 8MeV in gamma radiation upon absorption of a thermalized neutron.[6] Characterization of neutron yield in proton decay background events, which are predominantly encountered in atmospheric neutrino interactions in large water Cherenkov Detectors like Super-Kamiokande, would help increase confidence in the observation of proton-decay-like events. By studying the neutron yield, the events captured in the fiducial volume may be separated between a variety of charged-current (CC) and neutral Current (NC) event types.