Welcome to BYC. Glad you decided to join our flock. Sadly, keeping them separate is by far your best option. Dogs and chickens typically don't mix well. We get lots of posts from horrified new members whose seemingly benign dog suddenly and unexpectedly starting chasing and killing their chickens. And once a dog has chased and killed a chicken, it's virtually impossible to break them from doing it again. Unfortunately dogs seem to naturally view chickens as either chew toys or as prey. Please feel free to ask any other questions you may have. We are here to help in any way we can. Good luck with your chickens and dogs.