In scent discrimination training, what marks a reliable alert?

• A. No signaling at all.
• B. Signaling only when the handler is distracted.
• C. A consistent indication by the dog when the target odor is present.
• D. Unreliable signaling that varies with temperature.

Answer: (C)

A reliable alert is a consistent, observable signal from the dog that the target odor is present. In training, the dog should show the same clear indication every time the odor is detected, and this signal should occur regardless of distractions or environmental factors like temperature. This consistency lets the handler trust the dog’s findings and measure progress accurately.

So the best choice describes a consistent indication by the dog when the target odor is present, which is exactly what makes an alert reliable. Signaling only when the handler is distracted is not dependable, signaling no signal at all provides no usable information, and signaling that changes with temperature introduces unreliability due to environmental variation.