5 Most surprising things a Dog can smell


While the human brain is dominated by a large visual cortex, the dog brain is dominated by an olfactory cortex. The olfactory bulb in dogs is roughly forty times bigger than the olfactory bulb in humans, relative to total brain size, with 125 to 220 million smell-sensitive receptors. The bloodhound exceeds this standard with nearly 300 million receptors.

via Wikipedia

Thing #03:

Cancer – It has been discovered that cancer cells actually have a distinct smell of their own. This has incredible benefits to us, and dogs have been trained to alert on the strong smells of certain lung and breasts cancers. These special scents often flow up through the patient’s breath, and the dogs are able to indicate.
Via Link


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