knowing that it might 'pop ' out of joint again , he pulled himself backward and scooted awkwardly across the dusty pavement on his butt . `` i 'm saying that we 're the only species that does n't accept that be- ing prey may be a part of nature 's cycle for us. he was sure now there was more than one source . i finished shoving him out the door and slammed it shut . `` you 're lucky you have a brother and sister who care . '' i pressed my back firmly to the door . 