Warning, this is long... We just moved to our homestead and have a female yellow Lab who is about 3 years old. The other day, the dog chased and bit our neighbor's 4 year old on the back of the leg. There was broken skin and a couple teeth marks, but no serious puncture wounds or anything. Amazingly, her mother was very calm about the whole thing and explained to the girl that she had probably done something to agitate the dog. We called the dog over and let the girl pet and talk to her. I was very nervous about the whole thing and apologized profusely, but the mother assured me that to her it was no big deal and that she was raised on a farm where they were bit numerous times by their dogs, because dogs bite. We have two little girls and the dog has never so much as growled at them. They have hit her and taken food from her mouth, all without any response from the dog but a dumb look on her face. The only other incident we have had thus far was when a young girl began skipping toward me and my daughters while out for a walk. The dog chased her away and growled, all with her hackles up. The mother in this case, was also understanding and told the girl that she should not have approached us like she did. My spouse is of the opinion that many people deserve what they get when it comes to dogs, since they usually do something to get bit, such as being rambuncous or loud or walking toward or between the dog and children. In the bite case, my spouse witnessed part of the incident. The girl was with our daughters and the neighbor's (the girl's) large male yellow Lab came over. Our dog is nervous about their dog. Suddenly the girl screeched or started running or doing something else and our dog already nervous about the other dog in her yard, took offense and the chase was on. Additionally, my spouse saw the girl beating their dog with a stick or something and the dog was not happy and kept moving away from her. We like the idea of the dog protecting our children. Although they are supervised, we moved to the country in order for them to be able to roam in their own yard while we are in the house and have the dog keeping watch. In the past, at our other place, the dog has always just barked when anyone approached and then was fine when she saw they were welcome. Now, she seems to be more agressive, with growling, chasing and biting. I'm really hoping that its the change of scenery that has our dog on overdrive and that she herself has not had some kind of change. I would like advice on how to deal with this situation, with my main concern being over someone (especially a child) getting seriously bitten and us possibly sued. I have come across some ideas on this website that I like, such as warning people who might drop by to stay in their cars and honk, and to never approach the children when the dog is out with them, unless we are there to moniter her reactions. I also liked the advice about not placing signs because it could be used as an admission that you knew the dog was capable of biting. Leaving the dog constantly tied up is not an option since that defeats the whole purpose of her being a watch dog for the children. I did have the idea of giving the neighbor girl some dog treats and when she wants to join our daughters in our yard, to calmly call our dog over by name and give her a treat. Any thoughts or ideas would be most appreciated!