Blue Pete

Blue Pete was a half-breed from Montana. He moved to the Cypress Hills, near Medicine Hat, Alberta when things got to hot for him in the States. He had been a cattle rustler but once in Alberta he was warned by a young Mountie that he would be quickly arrested and punished if he did not follow Canadian laws.
Blue Pete and his pinto pony, Whiskers, could choose their employer on any of the ranches of the west; they were the best team available, knowledgeable and hard working.
Blue Pete found a good friend in Corporal Mahon, his young Mountie friend. And Mahon had his problems with criminals in the area, leading to Blue Pete's trials.

This friendship, and Blue Pete's adventures lasted for about 25 novels.
Blue Pete: Half Breed is the first of those adventures.