Be aware that dog feces can pose health hazards to your dog. If your dog is rolling in the feces of other dogs, it could pick up bacteria and parasites that may cause health problems. Worms eggs are one of the things you need to be concerned about. Make sure you're protecting your own dog with one of the preventives that are available. Usually, you give them one pill each month. Some vaccines will provide protection against certain parasites, too.
People in my neighborhood are terrible about picking up their dog poop even though it is required by law here. I steer Misha clear as I don't want her to have any health problems and it's no fun cleaning poop off your dog.