My erosas have been mating non-stop since we got them, but we thought they were both too small to lay. Well one of the females-around 19cm so quite small I would think-is increasingly digging, climbing the walls, consuming protein and calcium excessively etc. She hasn't been a big eater since we got her, but her appetite hasn't changed. I've put in a nest box with leaf litter and soil and she has dug a hole in it. Do we think she is gravid?