What discovery sparked pavlov's interest in the phenomenon that eventually became known as classical conditioning?

Dogs displayed a reflexive response before the stimulus was presented rather than after it was presented.

During Pavlov’s experiments with the dogs, he discovered a phenomenon that eventually became known as classical conditioning?

Classical conditioning is a type of learning that happens when a person or an animal connects involuntary responses to certain stimuli other than the original natural stimulus. Pavlov discovered that Dogs displayed a reflexive response before the stimulus was presented rather than after it was presented.

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