sam
The protectors
Bobcats are solitary so there is no pack leader.
Sam Uley is the leader until in Breaking dawn Jacob makes his own 'pack' with Leah and Seth then he is the leader of his own pack
He was suppose to be the leader of the original wolf pack because of his bloodline. He becomes the leader of his own pack once he breaks off from Sam's pack and a few others follow him.
The alpha, or leader, of a wolf pack is usually the oldest, but there are circumstances where a young male wolf challenged and defeated an older alpha wolf.
Because of the natural pack of his ancestors: the wolves. A dog must have a pack leader, or else it will try to resume the role of the pack leader. Which, in turn, can benefit to a lot of behaviour problems. When a dog securely knows it's pack rank, and you are the master, (or pack leader,) it is more comfortable, happy and secure of its place in the family.
Jacob belongs to the Quileute 'pack' they are the protectors of the Quileute tribe. they are Werewolves/shape shifters.
They call themselves the protectors because they were crested to protect the land away from vampires and other cretaures.
Leader of the Pack
Sam
There is no certain leader. They swim in schools because its hard for a bigger fish to catch all then just one.
Leader of the Pack - 2012 was released on: USA: 3 March 2012 USA: 31 January 2012