Hi there,
I have two Roborovski hamsters, which are supposed to be both females. However I think they are mating one another
.

I have tried to pick them up to see whether they are male and female but they are really fast. When we got them the pet shop told us they were both females - however I am not too sure.
What should I do, is it possible that they are male and female, or do they just like the same sex?
Should I ring the pet shop and tell them what is happening.
Many thanks and please help me
Love
Alison