OR - you didn't properly heat up the F/T item to give him a good heat signature to aim for. They use their heat pits more than their eye sight for zeroing in on the prey item. Which is why they are still so accurate even when in full blue.
I think this is most likely cuz it was in his cage for about 30 mins before I did the zombie dance and he didn't notice it then so it was closer to cage temp at that point