yes they do. buy him/her a wheel if you haven't already and stimulate him/her to use it!
dwarf hamsters need the same bedding as normal hamsters which is straw or shavings which you can get in a pet shop.
Yes you can, and some hamsters need to live in pairs. However, syrian hamsters are very territorial and need to live alone.
1 hour.
Hamsters need shelter so they have a place to eat, sleep, and do what is necessary to survive.
What a liar that guy. You need about 30-60 mins.
no
Yes.
No, they do not.
yes
Hamsters need baths atleast once a week or up to two times a week
Hamsters will need to be taken to a vet, and he or she will give you a prescription if needed or, they will tell you what will need to happen for your hamster to live a happy life.
By 'work out' I presume you mean'take regular excercise (in a gymnasium)'. Cavemen's lifestyle was irregular, governed by the seasons and hunting conditions. They had no need of excercise, life was tough.