Our BP has been a great eater for the last month, but tonight she was a bit strange. She was kind of vibrating when she came out of her hide and mis-struck at the prey item twice before taking it. The strikes didn't look defensive as the snake (as far as snakes can) looked kind of shocked that it had nothing in its mouth post strike. Is this the infamous spider wobble or a sign of undue stress during the feeding process? Either way, should we be concerned?

Thanks!