Story setup:
A fox is walking through the woods when she spots a glimpse of a rabbit jumping behind a tree ahead of her. She crouches down so as to avoid being seen by her prey. Her ears are forward and her eyes are sharp. In her stalking approach she hears a sudden rustle in the bushes behind her. Fearful of becoming a meal herself she freezes and turns her ears back to listen to the sound. Shifting her head slightly in that direction she sees a gray paw peeking out of the bushes to her rear. Having been spotted the wolf lunges forward to attack the fox. As the fox had detected the threat she is able to escape just in time, though her stomach still rumbles, she'll have to find another rabbit or mouse to eat later, but at least for now she is still alive.