A "pack" typically refers to a group of animals that live and hunt together, such as a wolf pack. These social structures help the animals cooperate in finding food, raising young, and protecting each other from threats. Packs can vary in size and are often led by an alpha male and female. In a different context, "pack" can also mean a collection of items grouped together for convenience, like a backpack or a pack of cards. This usage emphasizes organization and portability, making it easier to carry or store multiple items in one place.