A dog’s nose is an exquisite piece of machinery, capable of smelling in parts per trillion. When making the analogy to human vision, what you and I can see at 1/3 of a mile, a dog could see at more than 3,000 miles away, and see just as clearly.
References:
- James Walker, Sensory Research Institute at Florida State University
- Alexandra Horowitz, Inside of a Dog
- Deborah Wells, Peter Hepper, Animal Behavior Center, Queen’s University, Belfast