If you’re a proud dog owner, you’ve probably gone on at least one walk that took far longer than expected because your dog was trying to sniff everything. But for dogs, smell isn’t just interesting — it’s the main way they learn about the world around them.
"The dog’s senses are generally much better than ours, with the exception of daylight vision," he explained. But it's not just that a dog's nose is better than a humans.
"However, extra scent receptors don’t just mean dogs can sniff subtle odors we would miss," the American Kennel Club The numbers are general estimates from a wide variety of scientific research, since genes and receptors vary based on the breed of dog being studied, he said. But no matter how you slice it, dog sniffing power beats that of humans by a long shot.
Once the air is inside their nose, dogs also have more membranes dedicated to all those smell receptors."That enables them to smell much more," Dickey said. Dogs aren't actually completely color blind, Dickey said -- they just have a more limited range, covering the yellow-to-blue part of the spectrum and leaving out red.
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