The Incredible Sense of Smell in the Dog

The Incredible Sense of Smell in the Dog: 40% more of a dog’s brain than a human’s is committed to smell. Dog's olfactory bulbs are 4x's larger than ours.The avg person has 5 million smell receptors (olfactory), while the avg dog, depending on breed, has 125 to 250 million smell receptors. The Bloodhound has an incredible 300 million smell receptors!