Where are you guys seeing the 6th? I'm seeing two with their heads pointed left, two with their heads pointed right (basically under the rib cage), and one along the bottom. But there's kind of some other stuff going on in there so I'm not sure if I'm missing one.
I should post pictures of Watson's mom's xray from her last litter. She ended up having 10, and trying to count them made my eyes cross. Haha.