Alpha and Omega 2: A Howl-iday Adventure (2013)

Kate and Humphrey and their 3 wolf cubs are happily preparing to celebrate their first winter together when their smallest cub, Runt, mysteriously disappears. ...

 Alpha and Omega 2: A Howl-iday Adventure (2013) Online

IMDB: http://www.imdb.com/title/tt3111728/