Rutherford Montgomerie is always a good read. Yellow Eyes, the story of a Cougar is his best in my opinion, but Broken Fang is also excellent. The action is nonstop and the descriptions are great. Broken Fang and Yellow Eyes are the only two of his books I own, and they never get dusty on my shelf. The plot is compelling and the characters intriguing, even though they are mostly wild animals. Montgomery is one of the few nature tales authors who can really describe the mentality of an animal in a way that somehow seems to jibe with reality. These books got me hooked on reading, and I'm sure I will read them many times more.