White Fang and the Hunter on VHS video. Starring Robert Wood, Pedro Sanchez. Directed by Alfonso Brescia. Based on the story by Jack London. 1975.
From the VHS box cover:
A Boy And His Dog In The Wilds Of Alaska
The tale of a boy and his dog. A scenic outdoor adventure and a rousing drama, based on the Jack London story.
White Fang and the Hunter is the adventures of a boy and his dog who survive an attack by wild wolves and then help to solve a mystery.
Found on a budget DVD (“Actors: dogs”): White Fang and The Hunter/Mooch Goes to Hollywood
Might as well stick with VHS: White Fang & The Hunter [VHS]
Or read the book (Free Kindle edition): White Fang