A collapsible, mountable pet crate. A collapsible crate mountable to a wall such that the crate may be assembled for pet usage while mounted to the wall and collapsed into a compact package while mounted to the wall and not being used. A mounting bracket affixed to the wall receives a mounting rod (or mounting pins) integral with, or connected to, the crate to facilitate operation of the crate. The mounting bracket includes a first position for receipt of the mounting rod corresponding to the assembled or opened crate and a second position for receipt of the mounting rod corresponding to the collapsed or stowed crate. In another version, a pair of latches rotatably joined to a back wall for (i) joining said the wall to the bottom tray in a collapsed configuration and (ii) securing the foldable cage to the back wall in an assembled configuration.