The wolf is known for cooperative game hunting with other wolves in groups. The physical adaptation of group expressive behavior allows the wolf to tackle large prey. Their expressive behavior includes individual or group howling.
Wolves also travel in nuclear families consisting of a mated pair accompanied by their offspring. Many mated pairs are actually more successful at hunting than large groups because of agility. The wolf is a successful mammal that has never been vulnerable to human predatory extinction and actually became our "best friends" as dogs once domesticated.