Second part.
It scrutinizes us, barks, jumps, wags its tail: the dog communicates with us and with his own similar desires and moods; knowing, therefore, the language of his body we will be able to get more in tune and live fully enjoying the relationship between man and dog. Let's continue, therefore, in examining the typical attitudes and postures that the dog assumes to avoid unnecessary conflicts or manifest discomfort or contentment.
The eyes
The narrowing or closing in the middle of the dog's eyes indicates pleasure or submission; if it is gaze is straight and tense it must be interpreted as a gesture of defiance without fear. So far as the look you seem to us elusive: it's because the dog it feels submissive, he avoids the direct gaze of the dominant dog / man and in this way he communicates he would not want to attack. And if instead the eyes are wide open, the pupil dilated, indicate either great surprise or fear.
The mouth
When a dog yawns it is often misunderstood, because if for Man it indicates drowsiness, boredom, tiredness; for the dog it is exactly the opposite, that is anxiety, nervousness, fear. The yawn on waking, on the other hand, helps the dog to oxygenate more blood and get back in motion promptly. Another gesture that is often misunderstood is the smile: in dogs it is an unclear signal (it manifests itself with the lifting of the lips for a few moments), it is a calming gesture, which the dog manifests when he wants to sedate the souls of those in front of him. He licks his nose when anxious about what is about to happen: the swift, swift movement of the tongue highlights worry and fear.
The ears
When they move in jerks, first slightly forward, a moment later backward or downward dogs show submission or otherwise indecision. If instead we observe them pull back and flatten (with his teeth on display and his forehead furrowed) well! It is better to be very careful because they are a clear sign of aggression, otherwise if we notice the ears pulled back (but high tail, blinking eyelids) probably want to invite us to play and it is still a friendly gesture.
Tail
A dog holding the high tail is a dog that feels confident and dominant, vice versa he is a submissive dog and we also notice a slow and not wide wagging of his tail is communicating discomfort or mental or physical distress. The hair of the tip of the tail raised is added as a further manifestation of fear or distress.
Shake up.
This gesture is often made in conjunction with a meeting that arouses tension.
Turn to the side or from behind
It's a classic sign of calm.