Meridaplays20159go Meridaplays20159go English Answered SOS Why do the dwarves blame Bilbo for upsetting the dragon? 1.Because Bilbo is too scared to go on and told the dragon their plan in hopes that he would free them /2.He stole a gold cup so now Smaug is angry and knows there is a thief, 3.Because Bilbo got scared and told Smaug where the dwarves are hiding. 4. Because he tried to keep all the treasure for himself and now the dragon is mad.