I have had my tortoise for a two weeks now and I just noticed when I picked him up that the back of his shell is either soft or flexible. It is the small part right under the last scute that flares out over his tail. Normal or not?? He is just over two inches long, and the rest of his shell feels okay, I think. I have immediately put him in for a second soak today, here is the picture of him. He is in a large steralite bin with the cool side of his tank at 82, and the basking spot is 100 with 80% humidity. He eats dandialioin, clover, grass, kale, and some garden greens daily with calcium. There is a UVB light, he also gets a half hour outside 2-3 times a week and a daily 20-30 minute soak. I do not know the conditions he was kept in before I got him. He has been active, eating, pooping, and peeing well but I am now really worried because I have not noticed this before. The rest of his shell feels hard but when I run my finger over that small section it feels like it flexes in a bit.