Dogs have 50 times the amount of smell receptors that humans do, and the partof their brain that deals with smell information, the olfactory bulb, is 40times bigger than ours.
Smelling is part of a dog’s natural behavior, both to survive, and to makesense of their world. They smell everything and everyone they encounter. If ahuman behaved similarly, they would be viewed with suspicion and possiblylocked up!
Have you ever noticed that dog noses have little slits at the sides? This isso they can exchange and mix fresh air with exhaled air. It enables them tosniff for longer, and the smells are amplified and enhanced.
Read the full story at https://hound101.com/can-dogs-smell-cancer-how-dogs-are-saving-lives/
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