Does the dog ask for more attention?

Too often we focus on what we want and ot what our animals are communicating they want or like. It is important to respect a dog if they choose to walk away from you even if you are not done petting them. Taking a moment to see if they "ask for more" allows the dog an "out" if they wish to disengage. Respect what they choose. I encourage kids to do this by petting the dog gently for a short period of time and then moving your hand away and seeing if they move into you or if they choose to walk away or go elsewhere. Usually the choice is clear.