Dogs have 300 million olfactory receptors in their noses, making their sense of smell 10,000 to 100,000 more sensitive than ours. And the portion of his brain used for analyzing smell is, proportionally speaking, 40 times greater than that of the human's. The sport of Canine Nose Work leverages their amazing sense of smell with their natural desire to perform a task.
S. B. Roodlemagoo — Very knowledgeable trainer who uses positive reinforcement. Explained rational behind it and science basis in easy to understand