An avoidance response is a form of escape behavior present in animals in which the subject evades an aversive event. This can be due to anxiety or a frightening situation. Avoidance response is a response that is not necessarily conditioned before being exposed to in the stressful or fearful situation, the stimuli could be neutral. See for example studies involving avoidance response.[1]
Avoidance responses are used in animal training and are the commonly expected response to behavioural modification using negative reinforcement. Common examples of avoidance responses in animal training are: