These signs indicate that your dog is interested in something, or trying to decide on a course of action and is not receptive to attention (such as petting from a child) and include:
This is the type of posture we see in a dog who wants to chase a squirrel, confront an intruder or is getting ready to chase a ball. He is intensely focused and ready for action. He does not want to be hugged or petted at this time. Teach children to leave a dog, who is tense and focused like this, alone.