Animals in the natural world rely on sensory information in order to make quick decisions to stay safe. Sometimes a stimulus is paired to a predictable outcome, allowing the animal to make the appropriate response when encountering that stimulus later. However, it seems unlikely that individuals would have to learn, de novo, those stimuli which might signal danger during the first learning opportunity. Laboratory studies of animal fear, however, have largely been done using Pavlovian Fear Conditioning; generating fear by pairing a tone or other benign stimulus with an aversive one—typically a painful footshock. This is problematic. An owl does not hoot three times before it strikes, allowing the prey to form a conditioned response. To explore this innate behavior, we developed a novel, naturalistic approach to fear conditioning that uses a pseudo-predator paired with physical pain to induce fear responses. In this experiment, I trained male and female Long-Evans rats to forage for food pellets in an open space. After training, a fake owl plunged towards the foraging rats while a shock was delivered through subcutaneously implanted wires. Certain groups were presented with a tone or light to pair with the owl and shock, while others received no other predictive stimuli. Additionally, to test the effects of environmental context on their behavior, animals were tested in two chambers that differed in size, lighting, shape, etc. Even after changing foraging contexts, some rats that were never conditioned to fear the tone fled upon its presentation. The visual cue also induced a fear response in rats that were never previously conditioned to fear the light stimulus, but only fled when the shock was presented with the owl. Experiments performed under naturalistic conditions utilizing animals’ innate behaviors will better aid in our understanding of how the brain makes decisions in complex environments