So sorry you have to go through that--seems to be a common thread!
I really think that any dog that has ever attacked a chicken should not ever be allowed to have unsupervised access to them.
You need a very dog-proof coop and run, use welded wire (not chicken wire) and electric wire around the base and middle and top. Good luck and hope you never experience that again.

I really think that any dog that has ever attacked a chicken should not ever be allowed to have unsupervised access to them.
You need a very dog-proof coop and run, use welded wire (not chicken wire) and electric wire around the base and middle and top. Good luck and hope you never experience that again.