This may sound like a funny one, but it's a pet peeve of mine
Children are not taught at a young age how to interact with animals. As a dog lover/owner most of my life I can not tell you how horrified I am when little kids run up to my dogs on walks and want to smother or come over the top at them
It might not seem a valuable skill, but it is definitely one that more people need to learn. Dog's on leashes are already in a defensive state of mind, they know they can't escape, or run away from a situation. A dog should never be approached at a run, yelling, hands raised etc. Most dogs, especially nervous or skittish ones, will take this as a threat to one degree or another
Please teach your children to approach any animal slowly, cautiously, never approach with your hands above the dog's head, always have them lower to the ground. Give the dog a chance to smell/sniff you and decide if you are OK. If a dog backs away from you, do not push the encounter.
Skills like that should be taught to every child in my opinion