Two moon bears on Vietnamese bile farms are brutally slaughtered a day . Bears are kept in tiny 2ft by 4ft metal 'crush cages ' with no room to move . Their body parts are sold on the black market for just £625 per bear . MailOnline probes resort where 30 bears have been killed in three months . Cau Trang signs petition calling for end to cruel bear bile trade .
Two moon bears on Vietnamese bile farms are brutally slaughtered a day . Bears are kept in tiny 2ft by 4ft metal 'crush cages ' with no room to move . Their body parts are sold on the black market for just £625 per bear . MailOnline probes resort where 30 bears have been killed in three months . Dame Judi Dench signs petition calling for end to cruel bear bile trade .