The dog was the first to be domesticated 
Who decided to domesticate the dog?
Not much information on that .  But The domestication of animals is the mutual relationship between animals and humans .
I have always thought some people had a special bond with dogs, do you know why some do and some don't?
Not much information on that .  But their long association with humans has led dogs to be attuned to human behavior 
Are certain dogs better than others?
was the first species to be domesticated and has been selectively bred over millennia for various behaviors, sensory capabilities, and physical attributes.
Their long association with humans has led dogs to be uniquely attuned to human behavior and they are able to thrive on a starch-rich diet that would be inadequate for other canid species. Dogs vary widely in shape, size and colors. They perform many roles for humans, such as hunting, herding, pulling loads, protection, assisting police and military, companionship and, more recently
Eriugena to be part of the set of "seven mechanical arts".
History Use of dogs.
Although various other animals have been used to aid the hunter, such as ferrets, the dog has assumed many very important uses to the hunter.
The domestication of the dog has led to a symbiotic relationship in which the dog's independence from humans is deferred. Though dogs can survive independently of humans, and in many cases do, as with feral dogs, where hunger is not a primary factor, the species