Derek sighs and rubs at his forehead before he attempts to explain.

"I don't get the biology of it, but I don't get most of the biology of werewolves, anyway. No one explained, they just told me it happened and that was that.

Because werewolves are such a rare breed, especially now with the way we're hunted, it's vital that the pack continues on, even if the Alpha is killed. To keep from starting wars within the packs, it's easiest if the title gets passed to the Alpha's next-of-kin. So Alphas are able to have cubs, no matter what."