Yes most animals do.
Yes, since Russian Hamsters are Dwarf Hamsters - they can be kept in groups
No............ ...... ....... ..... ..(probaly not)
Hamsters lick their paws and fur; they clean themselves.
They queek coz they are scared, lonely or frightend
probally not hamsters prefere to live alone
yes, because one would get lonely. But if you don't want baby hamsters make sure they are the same gender
No they get lonely.
They clean themselves.
no they want to kill themselves
yes they are self-grooming.
no they sit and clean themselves
I'm sure YOU could make a YouTube video of your hamsters, but I don't think hamsters can make YouTube videos by themselves.