They know the kid, otherwise they wouldn't be playing with him and somebody would pick the baby up rather than sitting back and recording it, ffs. Dog attacks on familiar children are rare, dog attacks on unfamiliar ones generally occur if either a territorial breed has its space invaded, or the kid is interacting with another animal, particularly if it's another dog and both are male. One dog attempts to attack the other and the child gets in the way.
You have some strange news and fact sources. Kids get bitten by dogs everyday. Dog attacks on children is not rare. Granted it's most often because people don't wrangle their spawn and let them stick their faces in the dog's face, reach out to them, take their food, or pull on them, Still it's a misuse of the word "rare" here. I think those wolf blooded dogs know how tender that little brat is.
Wolf blooded? They're border collie crossbreeds, the markings are unmistakable. The cross is likely Husky, given the shape of the head and length of coat. Collies are intelligent but they need a lot of exercise. Those ones obviously haven't had any.
Actually I think they are a huskie mix. The snout and and ears aren't right for border collies. The ears especially look more like a Husky mix and are nothing like border collies. They kind look they might Utanagan and husky mix or Samoyed Huskie mix. I very much doubt those are at all Border Collies based on the face and ear structure. The markings mean nothing because huskies have similar markings.
All dogs have wolf blood, technically the same specie as wolves.
That could be. I've watch dogs do that same crawl before destroying little critters. I bet the one on our right gets the liver rights when they get the little bugger. He looks more alpha.