Could be a seizure or could be he ate something that won't pass and as it is trying to go though his intestines it gets stuck. I'd get him to a vet. If its seizures fine but if he has something in his intestines it could puncture and then you have big problems.

Do you see signs of injury? It sounds as if he may have a spinal injury. If I were you I'd get him to a vet ASAP. I've had many dogs and only one acted like this and it was after it was accidentally stepped on. He's good now but I got him to a … Read more

If he is getting ready to molt he won't eat. I'm assuming you're feeding him live food and if it is mice don't leave them in the cage, they will chew on the snake and cause sores. You can tell if he's getting ready to molt by looking close at the skin. If it looks … Read more