I had a bag of mulch in the tortoise pen, and my father went in to take it out, and two Russians (male and female) were in there. I found the male by the side of the pen trying to dig his way back in. But I couldn't find the female. Then, I decided to pick up the bag of mulch, and I saw the female. Its strange, the male left, but the female decided to spend the night, and most of the next day in the bag of mulch until I found her.