Proofing is the process of teaching your dog to perform a behavior in the presence of distractions.

• A. Shaping
• B. Generalization
• C. Habituation
• D. Proofing

Answer: (D)

Proofing is about making a trained behavior hold up under real-world conditions, especially when distractions are present. After teaching a behavior in a quiet environment, you add variations—different people, dogs, noises, backgrounds, distances, or delays—to ensure the dog can still perform the cue reliably. This focus on reliability despite competing stimuli is what defines proofing.

Shaping, by contrast, is the step-by-step process of building a behavior from small, reinforced approximations until the full behavior is produced. Generalization involves performing the same behavior in new environments or contexts, which is related but broader; proofing explicitly targets functioning under distractions and changing conditions. Habituation is the diminishing of a response to a repeated, nonthreatening stimulus, not about maintaining a trained response to a cue amid distractions.

So, the concept described—teaching a behavior to occur reliably even when distractions are present—best fits proofing.