They will 'wobble' back and forth, up and down, in circles...some will just sit there and have a slightly noticeable head shake. They'll hold their body in unusual postures that otherwise doesn't seem normal.

They will all differ in severity, some have it as hatchlings and grow out of it, while some don't show symptoms and could develop it. And some say that their spiders don't display any quirks...but they can and do throw "wobbly" offspring.

My spider only spins and wobbles when he gets startled or excited, like meal time, he tilts his head to the side and strikes the prey at odd angles.