Jim Kjelgaard 
Lion Hound [EPUB ebook] 

A big, smart, and slaughterous mountain lion is a challenge for two experienced lion hunters, a boy much interested in hunting and dogs, and a pack of hounds including an experienced leader and an excellent young hound.
Lion Hound is a tense and gripping tale of hunting and wilderness life. Follow young Johnny Torrington, his grandfather, a red hound pup, and their efforts to track down a marauding mountain lion in the wild rimrock country of Arizona!