I do, and I have two dogs.  One of them was a chicken killer when I first got the chicks - actually when they were 12 weeks old.  He'd never seen chickens before in his 11 years, but he chased one and caught it, then shook it, which broke its neck.  Over the next four months he caught two more, despite my vigilance.  At that time, the chickens did NOT free range.  Zorro (an elderly miniature dachshund) got the first one in the run, the second one when it got out of the run through a loose part of the fence, and the third one when he slipped in the run between my legs.
Over a period of several months, I worked with him.  I yelled at him, I sprayed him with the hose, I chained him for the first time in his life.  My other mini-doxie, Dooley, was given to me when he was almost 3 years old and he was scared of his own shadow at first.  Zorro's experiences taught Dooley he didn't want to have ANYTHING to do with those chickens!
Finally, when the chickens were fully grown and my very large rooster kicked Zorro's butt and the Cayuga drake ganged up on him and nipped him as he ran all the way back to the house, Zorro decided the chickens were nothing to chase or bother in any fashion.  He now walks through a group of chickens without his tail up - but it's not tucked under him - and with his head down, too, until he gets on the other side of the group.  I keep an eye on him around the bantam chickens, because I think he MIGHT go after one of those.  So far, he hasn't...  but the banties hang out with the LF chickens and therefore have protection.
It took a LOT of work.  The entire flock ranges freely, now, and has for over a year.