Final answer:
Juan's fear demonstrates stimulus generalization in classical conditioning.
Step-by-step explanation:
The fear demonstrated by Juan after being bitten by the neighbor's dog is an example of stimulus generalization and falls under the category of classical conditioning. In classical conditioning, a person or animal associates a neutral stimulus with an unconditioned stimulus to elicit a conditioned response. In Juan's case, the dog bite (unconditioned stimulus) caused fear (unconditioned response) and he generalized that fear to similar small, four-legged animals, even if they were not dangerous.