i wouldn't post pics that big again rightly blurry and huge on my 27" moniter. I bet he got the underbite from the sand. I've read the sand can get in their mouth and act as a grinding stone in the hinge of the jaw. I dont imagine the frog will have a problem health wise beacause of the pinky's but what do i know lol. Lock jaw would be a coo name lol. anyhow, interested in hearing what others have to say