Cesar Milan (the "whisperer") has elucidated doggie responses to other dogs as:
1) Flight
2) Fight
3) Avoidance
4) Submission
5) Dominance
Of course (as Cesar shows over and over) dogs view humans as dogs, which makes socializing dogs pretty easy if the humans don't anthropomorphize too much (but I doubt most people would let even children get away with the crap the dogs in the show are getting away with.)
But, people react to each other in one of these five ways really often. Flight/fight aren't common reactions, but you see them when the cops aren't around and the people don't know one another. Avoidance is super-common; it's often (but not always) associated with submission on the TDW, but some humans use it regularly just to stay out of a hierarchy which they wouldn't find advantageous. Submission describes the normal response of people who on first meeting praise excessively, laugh at everything said... Finally, you have the go-to of the alphas: dominance. The alphas set the stage, get the first crack...
Humans can be more genteel and egalitarian than all this, especially when they're immersed in esoterica, but they revert to the simple patterns the instant they drink, take drugs, get into large gangs, etc. It's as if the neo-cortex takes a powder. Mix a large group of friends with a few half-racks and send them outside. They'll quickly rank each other, they'll see non-group humans as threats (based on the others' group size), they'll yell at and push around non-pack members. The best responses to these types are to avoid them or to be loud, appear a credible threat.
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The bread and butter of TDW is the segment I think of as, "Listen, Yuppie!" It goes:
1) Cesar listens to tales of the dog dominating the owner
2) Cesar tells the owner (who's usually surprised) that the dog thinks the owner is an underling in the pack
3) Cesar explains that dogs speak a simple language that humans can learn, that dogs can't understand "time-outs"
4) Cesar immediately changes the dog's behaviour and shows how the owner can maintain this situation
This segment-type is often peopled with career-track couples who've avoided having kids because of the effect on said careers. They think their dogs can understand English (given enough time) and that they will be permanently mentally scarred by some mild physical discipline. TTFN.