Based on a large series of specimens from the Cerrado of central Brazil, the diet composition, reproduction, and sexual dimorphism of Amphisbaena alba are described. Amphisbaena alba displayed a relatively diverse diet, even ingesting vertebrates and plant material. Beetles, ants, and spiders dominated the diet numerically, whereas ants, insect larvae, and beetles were more important volumetrically. No association was observed between prey size and body dimensions. Clutch size ranged from 8 to 16, one of the largest known for amphisbaenians, and is possibly influenced by the large body size of A. alba .
Reproduction is apparently seasonal and restricted to the dry season.
No intersexual differences were observed, either in morphometric or meristic characters, presumably because of functional constraints related to fossoriality. The study area was a moor of about 16,000 m at an altitude of 2,020 m. The capture-recapture distances of the individuals indicate that S. lanzai is a quite stationary species. Between sexes, there were no significant differences in these parameters. Furthermore, the influence of weather conditions on the activity of this species was analyzed.