Animal containment unit for a vehicle

A unit for containing animals on a seat of a vehicle, comprising:

• a base structure including a base, the base including a front portion and a rear portion;
• and
• a frame structure that transitions between an expanded state and a collapsed state, the frame structure including:
• a front member comprising a first end and a second end, the first and second ends of the front member being rotatably coupled to the front portion of the base, the front member being shaped to define in part a front of the unit and define in part a top of the unit when the frame structure is in the expanded state,
• a rear member comprising a first end and a second end, the first and second ends of the rear member being rotatably coupled to the rear portion of the base, the rear member being shaped to define in part a rear of the unit and define in part the top of the unit when the frame structure is in the expanded state,
• at least one middle member comprising a first end rotatably coupled to either the front member or the rear member via a rotating joint and a second end that, when the frame structure is in the expanded state, is attached to a corresponding part of the frame structure such that a connection is made between the front member and the rear member via the at least one middle member and, when the frame structure is to be transitioned into the collapsed state, the front member and the rear member are rotated to a collapsed position in which the at least one middle member is within or substantially flush with the front member or the rear member.