Hello. I have a 1 and a half year Russian tortoise and I am just paranoid about his health and want him to be as healthy and happy as possible. He weighs just about right for his size , but does he look healthy? I'm worried about him getting any pyramiding or MBD, so if anyone spots that it would be really helpful. I've noticed that he has little indents around his centre bit of the shell, is that normal? Thank you!