and she blows her whistle, which is a bridge which tells the animal you've done a good job. come back and get food. but he missed that cue. and he went all the way around the pool on this perimeter pec wave. >> we're going to let him keep on waving. >> my interpretation is that he didn't hear the whistle. >> so not only did he not hear the bridge, then he went and did a perfect behavior and came back, and what he got was what we call a three second neutral response. which is a way to let the animal know you didn't do the correct thing. you're not going to get rewarded. and then we're going to move on. then you can also see through the video that dawn is running out of food. >> the animals can sense when you're getting to the bottom of your bucket of fish because they can hear the ice clanging around and the fishy, soupy water at the bottom. and the handfuls of fish they're getting delivered by the trainer are all getting smaller. so they know they're coming down to the end of session.