Our dogs' diversity can be traced back to the Stone Age

> Tamer wolves would get more food, and the humans gradually came to rely on the wolves to clean up remains of messy carcasses and to raise the alarm if a predator came near.

I read a book on the history of dogs https://www.goodreads.com/en/book/show/40180044-once-a-wolf

The only thing I remember is he said dogs may have stuck around humans because, like wolves today do with others predators, they could follow them around and scavenge off their successful hunts. But it was also possible the wolves/dogs just really liked snacking in between meals. Wolves are very capable at finding their own food but they enjoyed some meat & bones thrown to them in between their daily rounds. That's what crossed the line between scavenging on the outside and a closer relationship.

Not sure man. The closest relative to the dog is the likely extinct, Japanese Wolf https://en.wikipedia.org/wiki/Japanese_wolf

Maybe they were very tame to begin with? Like the extinct Falkland wolf:

https://en.wikipedia.org/wiki/Falkland_Islands_wolf

"There were no forests for the animal to hide in, and it had no fear of humans;[citation needed] it was possible to lure the animal with a chunk of meat held in one hand, and kill it with a knife held in the other"