The spider gene is prone to be neuro. This is because they were so overbred and imbred off of the original imported animal that was neuro. This is why they sometimes have wobbles and eratic behavior. rarely is it a dire situation. I had a bee once that was neuro and he would do the same thing. He would literally stare at the same spot in his cage for days. He grew out of it and as he got older he stopped doing it as often.