Abstract: A cage type enclosure for small animals, such as guinea pigs, hamsters, gerbils, rats of the like which simulates the appearance and operation of an apparatus such as a vehicle having revolving and reciprocating members. The simulated apparatus includes a wheel rotated by the movement of the animal which reciprocates another component of the apparatus through interconnecting linkage. Rotation of the wheel may also simulate other features of the apparatus, such as other wheels, a bell, etc. Access is provided to the enclosure for feeding and watering the confined animals.