Jack London 
Michael, Brother of Jerry [EPUB ebook] 

pub One.info present you this new edition. Very early in my life, possibly because of the insatiable curiosity that was born in me, I came to dislike the performances of trained animals. It was my curiosity that spoiled for me this form of amusement, for I was led to seek behind the performance in order to learn how the performance was achieved. And what I found behind the brave show and glitter of performance was not nice. It was a body of cruelty so horrible that I am confident no normal person exists who, once aware of it, could ever enjoy looking on at any trained-animal turn.