Your dog is a bit young to be running after rabbits and thats why she is barking. Wait until she over a year as you should watch her growth plates as the are still very soft.
Atb.
I would put them in the freezer for a few days to kill any mites worms and flea Ect. Then chopp them up and feed that way as that is what i do. There will be a few more reply on the way to put you in the right direction
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Atb