A pet travel system includes a pet storage module and a closet within an interior cabin of a vehicle. The pet storage module has multiple module walls and a door that enclose a cavity configured to receive a pet. The pet storage module includes one or more first latch members attached to one or more of the module walls. The closet includes closet walls defining a compartment sized to receive the pet storage module therein. The closet further includes one or more second latch members attached to one or more of the closet walls. Each second latch member is configured to releasably connect to a corresponding first latch member to secure the pet storage module within the closet during a trip of the vehicle.