Complex sentence: The injured Mengele tells Bobby how much he admires him and explains that he is cloned from Hitler, but Bobby doubts his story and is also suspicious because the dogs are trained to attack anyone who threatens his family.
Split into simpler sentences: The injured Mengele tells Bobby how much he admires him, and explains that he is cloned from Hitler. But Bobby doubts his story, and is also suspicious because the dogs are trained to attack anyone who threatens his family.