A group of wild dogs or canids that live together and carry out subsistence activities in this way is known as a pack. The pack has a marked hierarchical structure and that all the members that compose it must respect, meaning not to be thrown out or eliminated from the group. The pack is considered wild because it cannot coexist harmoniously with the human being, despite the fact that in many cities, due to animal abandonment and misery, groups of violent and wild dogs abound.
The pack can be composed of several specimens of the animal in question. Normally, the term pack is applied only to groups of dogs such as dogs, wolves, jackals and others. Curiously, the fox (despite being a dog) does not form packs since it lives alone or in pairs. The packs basically serve to facilitate the different subsistence tasks of the group, especially with regard to obtaining food. It goes without saying that by acting together, the dogs achieve greater effectiveness in this task, being able to hunt more frequently, and also get larger animals that otherwise could not be hunted.
As is to be expected in any type of group, the packs are ordered through deep and marked hierarchies, which can also happen in the case of some cats such as the lion. Packs are usually led by a male (known as an alpha male), the one who guides the pack and can establish his leadership through physical force over the rest.
Depending on the animal in question, the pack will have different characteristics, very particular to each case. This has to do with elements such as the formation of pairs within the pack, the duration of its members in the group (if it is for life, or until a certain moment in the biological cycle), the functions that each member fulfills within it, etc