Just thinking ahead for when I start building some buried hides this winter/spring. My ground is like concrete and the new kids would never be able to burrow, so planed on making some subsurface hides for them. In the spring and summer, rattlesnakes are a reality here. And the snakes would also like the sub-surface hides. Will the rattlesnakes harm the tortoises? I know, probably a dumb question, but not sure if fangs could puncture their hide.