None..
No animals like being in cages.
cages
Yepp
any cage sold at a pet store for small animals would be appropriate
You shouldn't buy round or oval cages for hamsters because they will not be very happy in one. Hamsters like the corners of square and rectangular cages. Corners give them a secure place to sit.
no
Wired cages, plus better ventilation.
Hamsters don't generally smell if their cages are cleaned regularly and properly.
Yes, they are great for dwarf hamsters.
some hamsters are trained but if the latch on the cage is shut then no
when hamsters have a fight and they are living in the same cage you MUST put them in separate cages to prevent serious injury. Hope you hamsters r ok
put them in opposite cages