it means the dog likes you
In your head. i mean your imagination.
Ask your dog's veterinarian.
your dog isa messed up in the head
It is dead.
When a dogs head is hot to the touch, it does not mean that a dog is ill. Like humans, a dog reacts to the temperature changes in the environment.
Its just scratching or has something on its face.
answer the question
No all male dogs, from puppy to grown up, do this.
a bald head little stupid girl we call a dog
You dreamed of a Bull dog biting your head ( who comes up with these questions )?
It may mean they have a flavor in their mouth that they don't like
It is a way for the animal to demonstrate that they need attention or petting. I think that it is called a hedging and is most certainly a sign of affection.