This book is most useful to dog behaviour specialists, with limited coverage of cats, and even less of rabbits.
But useful it is. And not just a little.
In-depth, best practice and (relatively) objective approach to many aspects of problem behaviour. Very interesting and in-depth chapter on socialisation and age-related behaviour dysfunctions.
The blurb about the author of each chapter is a who's who of influential behaviourists, and a must-read in itself.
It is by no means an all-encompassing behaviour handbook (it covers neither all companion animals, nor all behaviour problems), but is a high-quality, reliable read, on the problems it does cover.
One of the rare books on dog behaviour that was written by highly qualified authors (experience and academic credentials). I consider it a must-read to any wannabe behaviourist.