i remember seeing a special where they were testing the inborn mindset differences between wolves and dogs, so they took a dog that grew up with people, and also a couple wolves that had just as much human contact, and then gave them challenges, stuff like pulling a rope attached to some food out of a cage, the wolves and dogs both passed, but when they made it so the food was impossible to pull out they found the difference, the dogs would after having tried everything they could think of go to the humans and bother them for help, while the wolves would just keep trying and not even think to look towards the humans for help, so basically dogs have been with us for so long that its ingrained in their dna to work with/for us.