I have a little(10 months old) Radix who for the last 6 months has shown a strange head tic. Working with kids the way I have for the last 23 years I have had kids come through my classes with Tourette's Syndrome. Watching this little snake it only reminds me of this disorder. The only way to describe it is when you see someone and you give them a headbob as a way of saying hello. This snake will give anywhere from 5 to 10 of these in a row. Everytime his head rises higher and higher. It appears to only happen when he is not actively doing something else like eating or moving across the enclosure. Sitting still and staring at something is the only time I have observed this behavior. He does everything else like a normal snake except for this tic. Has anyone else ever seen this type of behavior?