Prior to getting my chicks... I was so worried about this same subject.
I have 4 dogs... 3 have been with us for many years and the 4th is only 4 months old.
Like everyone has said thus far is what I have done to introduce my dogs to the new family members.
So far so good. For now, my lab wants to mother them, my oldest doesn't care at all. The 3rd and 4 month old are the most curious. I have my 11 wk olds in two converted dog kennels where all the dogs can see what is going on... It helps a lot. The birds can see the dogs and the dogs can see the birds.
Now that I have a brooder box of 9 where they cannot see the babies, the dogs were excited about the new arrivals like us. It's taken about 3 hours, but everyone has settle down for the evenig.
Although I still do not allow the dogs around the birds without a close eye on everyone.
Good Luck with yours!