2 Golden retriever puppies

Question
My husband and I, and my mum have brought 2 8 week female golden retrievers (sisters), They will live in seperate houses but currently they are living together. They play fight when they are playing with toys etc however today they fought when they went into their crate / bed and it seemed to be a little bit more aggressive than normal. One was very tired but i am a bit nervous about them hurting each other. What do you suggest?

Answer
It can look terrible, but I never knew them to hurt each other.  Still, it might be better if you could put some sort of a divider in the crate when you leave them alone.  Crates come with dividers, or maybe something like an oven rack would work until they go to separate homes.