Scent is like dog speak. Dogs’ amazing sense of smell is 10,000 to 100,000 times better than humans. This tends to be around the canine ano-genital region. This behaviour can become even more awkward for owners when a dog chooses to greet a human visitor by putting their head between the person’s legs and have a good sniff of their crotch. Training can teach a dog to be a more respectable of your space. There are about 300 million sense receptors in their noses, versus the 5 million in human noses. Dogs tend to sniff where scents congregate and are dispersed. Wee Trojan. Why Do Dogs Sniff Each Other's Butts? Why do dogs sniff at human bottoms? NinaMind. These dogs smell not only the dogs’ rear, but the cat’s rear, and human crotch. Dogs' amazing sense of smell is 10,000 to 100,000 times better than humans. Why dogs sniff other dogs The sense of smell is a dog’s primary sense. Answer Save. Lv 7. So, a good bottom sniff is an expedient way for your dog to find out the other dog’s gender, age, mood and much more. Sniffing another dog’s bottom is the canine version of Wikipedia! 1 decade ago. A butt sniff for dogs is like a handshake for humans. When a dog sniffs another dog's bottom, he's actually gathering information about the other dog's gender, diet and emotional state. So, while your dog may recognise the shape of another dog by visual means, a lot more information can be gathered by sniffing them up close. When you own a dog for the first time, there are many things you have to get used to. Studies have also shown dogs to be effective at detecting health conditions like cancer and migraines. a gentle sniff - rather than prodding you with his nose there is nothing wrong with allowing a dog to greet you like this. Relevance. The canine sense of smell is so powerful that dogs are famously employed in drug-sniffing operations, forensic investigations and bed bug detection. They also have a special part of their noses called the Jacobson's organ that lets them ignore the smell of poop when they sniff another dog's … 1 decade ago. 1 0. As long as the sniff is not too intrusive - i.e. because they acquire knowledge this way. One quick sniff and a pup can learn an awful lot about her new friend (or enemy). But, why do they sniff human beings? They love all bottoms. The way dogs sniff genitals of other dogs is just one example. 1 0. When dogs sniff each other's butts, they aren’t just huffing stale fart fumes, but “speaking with chemicals,” as the American Chemical Society puts it. Before getting creeped out, understand that dogs are able to sniff out bladder cancer cells in urine, identify ovulating cows, locate bed bugs and the list goes on. A dog’s nose contains nearly 300 million scent receptors, compared to a human’s 5 million.In addition, the part of a dog’s brain that processes smell is 40 times greater than ours. 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