Turtle WTF

Yeah, I have four turtles now. XD They were my sisters in her apartment, but she couldn't take care of them, so we're watching them for a while. They're Yrttle, Myrttle, Geoff, and, uh, Greg (I think). She didn't tell us how to identify them yet, so I don't know which one is on here. All I know is that he/she looking at me with a WTF look on his/her face. XD