Potatoes are highly poisonous!!!!! Carrots are gd for them and cucumber only lil tho

What ever you do don't shout at it its cruel!!!!!! Take it to vets ask them to put it down they will do it with injection they don't feel a thing :)

Don't no first q. But separate them when 12 weeks if the hamsters are dwarf the probably wont fight but they will if any otha types of hamsters