Boy yes, girl no. She'll become sterile at 12-14 months.
My hamsters baby's were nearly 4 weeks old when we found she had given birth to more babies and they seemed to protect them with mum
About a year old
You don't breed hamster babies until there at least 1 year old
If the 1 year old hamster is a syrian hamster DO NOT put another hamster with it. They are hamsters that NEED to be alone. If it is a dwarf, hamster, it might be ok. Dwarf hamsters like having each others company. However, if the 1 year old hamster is not use to other hamsters, it might not go over to well.
2-3 weeks.
the difference between a dwrf hamster and a regular hamster is the dwarf hamster will stay the same size wbut the regular hamster will keep gtrowing---- Well normally a dwarf is a lot smaller and a lot less sturdier. A dwarf is good for a fourteen year old and a reg. one is good for a nine year old. They both make awesome pets! You can be happy with either one.
2 months
5-60
If they are both female yes. Keep all males alone in a cage.
WOW! Nearly 3 years! I'm afraid that is in about 90-100 years old in human years. Dwarf hamsters usually only live until roughly a year an a half. well i don't have a Chinese dwarf hamster, but i have a Russian dwarf hamster and he is over 3 years old. he will be 3 years 1 month old on the 7th July. ive got no idea what age he is in human years i have no idea i need some help to find out
Just a few months.
They can still get together even if one is old and the other is young, it just depends on the hamsters.