ALL Hamsters need a minimum cage size of 100cm x 50cm, with a deep layer of bedding for digging and burrowing and a wheel that is big enough so that their back is not arched when they run. With solid footing. Hamsters are not great climbers and this should be taken into consideration in their habitat. Some of the cages shown in this video are not adequate, and cages should not be fully cleaned out as the cage needs to smell of the Hamster to minimise stress.