At about 3 weeks, I had to move the cages to my washroom because I was having an allergic reaction to the smell of the hamsters for some reason. At about 4 weeks, you could tell they totally became adults so I had to separated them to another cage to prevent them having more babies. So here is a video of their cute young time, they are still cute as adults but this was cuter when they were young 😀
My Baby Hamsters at 3 weeks+,