Why You Should Never Pet A Dog On Its Head or Hug A Dog

The worst way a person can approach a dog is walk up to them head on and lean over them to pet them specifically near the facial region i.e pat the top of the head or embrace around the neck.
Dogs do not like you hovering over them. This is a dominant, threatening gesture and/or posturing for a dog. 

A person should approach a dog in the most non-threatening way possible which means crouching down to the dog's level and turning your body sideways. Whatever you do do not stand or bend over the dog or approach directly.

Let the dog come to you always. Squat down, extend you hand out and let the dog approach you at his own pace. Try to be laid back and not nervous as the dog will pick up on this. If the dog just stands there away from you or back off or pulls his head away after initial sniffing you are best to leave the dog be. If you observe any of the following dog body language:

• Stiff or tightly tucked tail
• Ears pinned back
• Hair raised on the center of his back
• Posturing dominantly 

The dog maybe aggressive fearful, anxious or uncomfortable if any of these signs are visible.

These steps should be taken no matter if the dog is familiar and known to be friendly or if the dog is an unknown stray. 

A dog can be unpredictable just like any other animal. 

However once you know the dog is calm, friendly and laid back let the affection and petting begin.