What do you think is wrong with this snake? At first glance, it might appear to be the rat in its belly, but that’s quite normal. It’s actually in the space around the middle of the photo, immediately below the rat’s head. If you look closely at the snake’s ribs, you can see that at this point there is a separation where they curve away from each other as opposed to the normal curvature found everywhere else. This is called a subluxation of the middle ribs. The muscles the snake uses to move are actually attached to its ribs, and in this case some of them pulled too tightly and the ribs got moved out of position. It’s nothing more than an inconvenience for the snake, but if it happened multiple times it could cause the snake to lose its freedom of motion.