Etiquette for Dog Owners: Tip #1
Everyone does not love your dog as much as you do.
Seriously.
When I have my dog with me, I am not secretly wishing that your dog will stick its nose in my face.
Corollary number 1: There is no rule that says all dogs everywhere must 'meet.' Some of us want our dogs to learn to ignore other dogs. Some of us know that dogs on leash will always be more aggressive than loose dogs. Every dog you see on the street is not an invitation.
Corollary number 2: As hard as this is to believe, I will never think your dog is cuter than mine. (Though I may think it's pretty damn cute. Although not if you violate this important etiquette tip. Seriously.)