The anger he felt towards Cara's deposition kept swelling. Though he tried his best to calm down, it kept growing. He wasn't sure why. Perhaps it was the fact that Ptarmigan continuously insulted Cara and the previous management. Or maybe he felt as if he failed Jinx and Lecter. Or he was feeling like a slave, a sheep even as Viggo and Andrus, Ptarmigan's followers, combed the valley. Whatever the case, he was seething mad and no amount of animals he tortured and killed would help settle him.
He thought of the only thing that could really sooth him. Killing a wolf. A morbid way of calming down, but to him it was effective. While he killed other animals for fun and as a stress-reliever, he found that killing or harming one of his own kind was best. That is what he did after his family was discovered and killed, and it made him a lot more manageable.
The Beta already knew who to get rid of: Keith. The annoying brat had already lost Cara's intrest, and he did not seem to talk to anyone else, so he would not be missed. If anyone did ask, he would have a cover story: we were hunting by the river. He tripped, hit his head, and drowned as we chased something. His body was washed away.
The plan complete, he went to find the young Theta, his maniacal plan set.