A dog may be nice but it is still an animal and humans cannot fully understand animals. I do not think anybody knows what goes on in an animals mind. At the most we can only assume. It is best to play safe and not leave babies or kids alone with dogs to begin with. It is also best to prohibit other kids (or for that matter other people) from touching or going near your dog no matter how nice he is. One accident or attack could destroy your dog's life and yours too. There should be a clause in those guidelines that if parents permit their kids to go near or touch your dog despite your warning, it's the parents that should go to jail if something bad happens. If you are responsible for your dog, parents should be responsible for their kids.