Reconfigurable pet toy products and releasable twist-locking interfaces which may be used in connection with the reconfigurable pet toy products are disclosed. Some example reconfigurable pet toy products may comprise at least one middle piece, a first end piece, and a second end piece. The different pieces may couple with one another in multiple different configurations. The middle piece may include an internal cavity and a chew access window. The end pieces, when coupled with the middle piece according to one configuration, may provide closures for the internal cavity. In another configuration, the first and second end pieces may be coupled directly together, without the middle piece. In still further configurations, multiple middle pieces may be coupled together, and a variety of different middle pieces and/or end pieces may be mixed and matched.
