Abstract: A co-sleeper bed system includes a primary bed framework having a primary enclosure that includes a floor and first and second side guide rails defining an open top for receiving a primary mattress. The bed system includes an auxiliary bed frame having frame members that receive an auxiliary mattress, the auxiliary bed frame having a first support leg depending from the plurality of frame members. The first support leg includes a flange slidably received in a channel of the first guide rail. The bed system includes a crib framework having a floor for supporting a crib mattress and a plurality of leg hubs each having a truncated configuration extending downwardly. A pair of slider flanges is attached to a pair of inner leg hubs, each slider flange being slidably received in the channel of the second guide rail for removably coupling the crib framework to the primary framework.