There are numerous approaches to dog training - one of which is the alpha theory. What does it say and does dominance behavior between humans and dogs actually exist?

The dog, Canis lupus familiaris, has lived with humans for longer than any other animal. Domestication of the dog began at least 14,000 years ago when wolves began to join human settlements and feed on human food scraps. Over time, humans began to tame these wolves and use them for hunting, guarding and companionship. This is how the close bond between four-legged and two-legged creatures came about.