When I adopted my first dog, his breeder gave me a book called "Behavior, Development, and Training of the Dog: A Primer of Canine Psychology" by Frederic J. Sautter and John A. Glover. This book is incredible. The copyright is 1978, but if you are able to find a copy anywhere, I highly recommend picking it up and reading it cover to cover. As a first time dog owner, it gave me great insight into canine behavior, including how dogs learn, and their critical stages of development during their lifetime.
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