The scent of war: According to Mike Dowling, a former Marine Corps dog handler who served in Iraq, there's a simple explanation for why the Navy SEALs took a dog along on the Osama raid: "A dog's brain is dominated by olfactory senses." In fact, Dowling says, a dog can have up to 225 million olfactory receptors in their nose -- the part of their brain devoted to scent is 40 times greater than that of a human.
"When you're going on a mission," Dowling says, "a raid or a patrol, insurgents are sneaky -- they like to hide stuff from you. But a dog can smell them. .... [Think about] Saddam Hussein ... what if Osama had been [hiding] in a hole in the ground? A dog could find that. A dog could alert them to where he's hiding because of the incredible scent capabilities. ... You can only see what you can see. You can't see what you don't see. A dog can see it through his nose."
Above U.S. Marines from the 2nd Battalion, 8th Marine Regiment of the 2nd Marine Expeditionary Brigade wait for helicopter transport as part of Operation Khanjar at Camp Dwyer in Helmand Province in Afghanistan on July 2, 2009.
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