[Objectives] To evaluate the ecological risk of transgenic Bt rice on soil animals. [Methods] We fed three different varieties of transgenic Bt rice and their isogenic rice tissue residues to Folsomia candida and assessed the feeding preferences of F. candida by determining the quantity and distribution of fecal pellets associated with different Bt or non-Bt rice. [Results] The Bt protein (CrylAb and CrylAc) of transgenic Bt rice had little impact on feeding intensity. However, inserting the Bt gene into rice plants changes the chemical compo...