This is a very interesting video and article - thank you for posting it.

However, whilst it explains very clearly how wolf packs operate, it does not refute "pack theory" in general, and it is certainly not saying that pack-theory is defunct as you suggest in your title. In fact, the article actually states that in situations

"when one puts a random group of species together artifically, these animals will naturally compete with each other and eventually form a type of dominance hierarchy. In such cases, it is appropriate to refer to the top-ranking individualas as "alphas", implying that they competed and fought to gain their position. And so too it was with wolves when placed together artificially."

I have seen many posts on many different pet forums about "pack theory" being an outdated theory that has been superceded, and the poster usually follows on to state that if anyone who keeps more than one dog there won't be an "alpha" dog and a pack hierarchy. However, what this video and article is actually saying is that that is just not true. It is saying that whilst wolf packs are composed of a family hierarchy and do not have to fight for their position, any random group of dogs (including wolves!) brought together will behave in the "pack theory" way. Hence anyone who keeps more than one dog will indeed find the pack theory applies.

__________________
Bergies and borders - what more could anyone want? Siamese and maine coons, of course!

From the Rubaiyat of Omar Khayyam:
The Moving Finger writes, and, having writ,
Moves on, nor all thy Piety nor Wit
Shall lure it back to cancel half a Line,
Nor all thy Tears wash out a Word of it.
(But you can always edit your post, of course )