I found " My Smart Puppy " to be the best book out of a large selection we bought and to this day I am still regularly referring to it , both for our training and to help friends . Cara has a big brother , a Russian Blue cat by the name of Tindy . They get along really well and love to wrestle , it looks scary to visitors but they know each other 's limits !
According to the above context, answer the following question.
Why did I buy a book ?


My dog was hard to train