Abstract: A vehicle-suspended pet trailer is disclosed that includes at least one entry and exit facilitator and/or at least one storage tray, accessible through a cargo access door at the top of the trailer, for storing and transporting pet-related and other cargo. The pet trailer comprises a pet carrying box attached to the top of a mounting bar that can be docked with a trailer hitch attached to a vehicle. The trailer further comprises at least one entry and exit door on at least one side of the pet carrying box. In preferred embodiments, an entry and exit facilitator, such as a ramp or staircase, can be deployed between the ground and the at least one door when the pet trailer is docked with a vehicle and can be telescopically withdrawn into a door when not deployed. In some embodiments a trailer hitch ball can be docked with the mounting bar.