It arrived for me at the library last week, and I blasted through it. Granted, it's a children's book (I'd say 8 and up), and the print was a bit big, but it was totally immersive. I found the chapters distractingly short, but it made it really easy to "just finish the chapter." I know I'm into a book when I'm reading at lunch and one of my team comes into my office, calls my name, and I either don't hear them at all or am so startled by the presence of another human that I jump.
Set in prehistoric times, Wolf Brother is the story of a boy and a wolf cub, both left alone to fend for themselves. Together, they thrive.