So if you're referring to dogs, literally-I go out every day hiking and doing trail maintenance with my dog and we're definitely a team. I'd have at least one more dog if circumstances allowed. We truly work together and that's always been my relationship with dogs.
If you're referring to people in dog pack-like groupings, really it's the same thing-in activities of shared interest, I love being with familiar, like-minded people, doing a project or activity together, but also like working alone much of the time. In my mind, when I'm working alone, the "pack" is still with me mentally-we share the project and will consult and empathize with the work accomplished, alone and together. Yes, that's VERY important to me. When people talk about loneliness, that's what loneliness would be to me-no one to share the projects and adventures with. Often these relationships are not at all social friendships, but that's just fine.