Reason dogs sniff each other's pee has fascinating explanation – according to scientists

Reason dogs sniff each other's pee has fascinating explanation – according to scientists Dogs are often seen sniffing each other's urine during walks, and scientists have suggested that this behaviour could offer clues about how self-aware they are Dog owners know the routine all too well - that moment during a walk when their pet suddenly stops to sniff a patch of grass, and sometimes what they've found is another dog's wee. While it might appear to be a disgusting habit to us, scientists have suggested there could be far more happening when dogs examine each other's scents. It led Reddit users to wonder: "What can dogs learn from smelling each other's urine? Can they tell the difference between a vicious guard dog and a Chihuahua from a sniff?" According to one researcher, the way dogs sniff urine could provide insights into how self-aware they are - and even whether they're capable of empathy. Dogs don't just sniff for the sake of it Roberto Cazzolla Gatti, a researcher at Tomsk State University in Russia, investigated whether dogs could identify their own scent. He created what he termed the "sniff test of self-recognition" (STSR), which he thought could be more appropriate for dogs than conventional tests using mirrors. The study involved four stray dogs, which were tested four times annually. During each test, the dogs were presented with five containers - four containing urine samples from each of the dogs and one containing an odourless substance. They were then given five minutes to explore the containers. They showed more interest in other dogs' wee The dogs spent more time sniffing the urine samples belonging to the other dogs than their own. Researchers at Tomsk State University concluded that this indicated dogs were able to identify their own scent, meaning they had little interest in investigating it further. The study also revealed that older dogs spent more time sniffing the scent samples of other dogs compared to their younger counterparts. Gatti suggested this could back up the notion that self-awareness develops and grows as dogs get older. Why not use a mirror? Scientists have previously explored self-awareness in animals using what is known as the "mirror test". This involves placing a visual mark, such as a coloured dot, on an animal before observing whether it recognises its own reflection and attempts to examine the mark on its body. While certain species have passed the test, many others have failed to do so. Gatti argued, however, that this does not necessarily mean those animals are without self-awareness. Given that dogs rely far more heavily on their sense of smell than humans, he believed that testing their reaction to scent could offer a far more suitable measure of awareness. It could even be linked to empathy The theory becomes even more compelling when you factor in the connection between self-awareness and empathy. Researchers believe that an animal capable of distinguishing itself from others may also be able to understand or respond to the experiences of those around them. Based on Gatti's findings, the dogs' behaviour could therefore suggest they possess some degree of self-recognition and potentially even the capacity to empathise. It's worth noting that this is a single study involving a very small number of dogs, so it falls short of proving that dogs have self-awareness in the same way that humans do. Nevertheless, the next time your dog pauses mid-walk to sniff another dog's urine, it may be worth giving them a moment to do so. What might appear to be an off-putting habit could actually be their method of collecting vital information about their surroundings - and possibly even other dogs in the local area. Your thoughts Speaking on the topic on Reddit, one user said: "Their urine messages inform other dogs that they exist, and their sex (lady dog or gentleman dog, and possible with a third category for dogs wanting to ask Summer Smith awkward questions about missing equipment), health and fitness. "Maybe they can also smell if the other dog is a very close relative, but I'm not convinced of that. "It's a bit like Facebook where people brag about living the good life, eating pretty-looking meals, having jogged 5 km, or show off how smart they are." Another added: "Are you doubting the existence of pee-mail? There is good evidence that dogs can pick up indications of gender, whether the peer is spayed or neutered, age, health, stress level and diet from a good sniff of urine even if it's dried off. "These things are transmitted through the presence or absence of hormones. With five times more olfactory receptors than human beings and additional olfactory organs dogs are sensitive to pheromones in ways that we cannot even imagine."