Thereof, how many hamster breeds are there?
five
Likewise, what is the rarest type of hamster? European hamster
In this regard, what is the most common hamster?
Syrian hamster
Is it better to have 1 or 2 hamsters?
Because they're so territorial, it's generally best to only keep one hamster per cage. Adding more than one hamster to the same enclosure could lead to some really nasty fighting. Dwarf hamsters are more sociable than Syrian hamsters, but you still have to be careful.
