"2) don't antagonize an alpha by looking directly into his eyes"
would be nice if they'd wear a alpha sign round their neck so it's obvious before eye contact.
Today i walked through Pratumnak park sois, probably 20 dogs on each path\soi, i carry a telescopic baton in a waist bag, it works well because it's available in a few seconds plus it's not visible so not an aggressive thing to carry like a stick.
Like today as i approach many dogs together, they look nervous, if appropriate i talk in a low non threatening voice and it calms them. So today i passes maybe 80+ dogs and not one issue.
For the real hostile dogs can also be young ones, best to report the specific dog so it's taken away.
The worst dogs in Pratumnak area i used to see are gone