There exist many facets to wolf social behavior that are analogous to humans, though we are 55 million years or more distant from carnivores and canids.
While this suggests some independent evolution of sociality is highly probable, the utility of what’s s called ewuifinal behavior – in such a case the cognition leading to prosociality can repeatedly occur, selected for both contingently

( I observed very discriminate choosing in the wolf, rather than some nonconscious obligate response, though signals not unlike our own submission occur. You have all noted that the postural submission signals of dogs have been trained from their ancestral wolf over the few thousand to 16,000 years of different known and hypothesized destination events. And though you misconstrue the signals you do understand that Canid behaviors ARE sociocognitive ; that is, highly aware of circumstance and variable among individuals. I note that the ideation of getting along for social utility is a variable. This has surely moderated wolf aggressiveness repeatedly and shaped their sociality.)

We know that developmental windows in the necessarily fast maturing wolf ( mammalogists and carnivore science are far more knowledgeable than almost all popular articles, and even locally based researchers indicate in popularized articles. I won’t address the known science here) are narrower than the domestic, which humans selected for absence of conspecific bonding and male parental care. Dogs no longer have the distinct annual hormonal cycling that occurs in both male and female wolf, and other drivers of certain cognitions.

All that is far longer discussion than I’ll engage in comment.

A “yearling” means between one and two years following the known birth. Wolves sexually mature in about 22 months. But they are also, like subadults, most open to sociality. As wolves cognitively mature at about 5 years, though may disperse from natal families largely between short of 2 year early age and the attainment of that 5 year autonomy, the 4.6 year mean mortality occurring in gun-surrounded Yellowstone is tragic.

Wolf reproduction has some distinct population biological parameters; like other animals, in unsaturated habitat they have higher reproductive success, and quickly fill up to the 12% range of “management” of prey populations, but then undulate in number over the years, following ptey populations, as natural ( that is, absent human persecution) constraints occur.
The several million hypothesized North American population before early-mid 1800s lived in BALANCE with immensely larger wild ungulates populations that now exist)