Train your dogs ladies (and gents). Lucy is 85+lbs and will walk off a leash next to me - actually she likes walking a few steps in front of me - she always must lead the way. Though she is an old lady now, she was trained as a puppy and only chased birds, squirrels and bicycles but a strong NO or STAY would stop her. She waits at the curb for a 'go ahead' before crossing the street, doesn't chase after other dogs but children's faces are always too tempting. She knows all the neighborhood children as they do her.
She will not take food off the table or that not meant for her except from a child - just too easy. She actually licks it first, knowing that we won't let the child eat it and she'll get it.
She will find a cool shady spot in the grass if we stop to talk to a neighbor and if we take too long, she might even walk home by herself.
Krystal, our previous 100lb shepherd was the same except she didn't always have to take the lead.
She has attacked (with good cause) and is my family's protector, especially her babies.
Pull on a leash, absolutely never.
Thanks Julius for training her and all our dogs so well!