According to foreign media reports, all dog owners have been hit by their pets’ noses against their faces or other parts of their bodies. A dog’s nose is usually cold and sticky, but at other times it is warm and dry. Most pet owners want to know at some point whether their dog’s nose should be wet or dry. It’s also normal that the nose of dog is hot and dry. < p > < p > Anna B á lint, a researcher at Roland University in Budapest, Hungary, is studying animal behavior. When dogs sleep, their noses usually warm and then dry, and when they wake up, they lick their noses, and then they go back to being cold and wet, she says. The researchers want to know if it’s good for a dog’s nose to get cold. < / P > < p > they hypothesized that a cold nose can help regulate the dog’s temperature, but the tip of the nose is too small to make a meaningful contribution to body temperature regulation. So the team measured the temperature of the noses of many animals, including horses, dogs and moose. The team determined that the nose tips of dogs and predators are usually colder than those of herbivores. < / P > < p > the next step is to find out whether colder noses give predators an advantage in the wild. The team experimented with behavior and the brain to see if a cold nose would help with better heat detection. The team successfully trained three dogs to choose a warmer object that was at the same temperature as the potential prey, rather than at room temperature. The results show that dogs can detect the weak thermal radiation in the distance when hunting prey. In a second brain centered survey, scientists showed 13 trained dogs a box with warm water and insulated doors that were trained to lie still in a functioning MRI scanner. When the insulated door is open, the dog’s brain reacts more and shows a warmer surface, while when the door is closed, it appears colder. < / P > < p > specifically, in these tests, the left hemisphere of the brain is activated, which is the side that tends to process the response to food, which is related to the predatory activity of many vertebrates. The researchers believe that dogs and other cold nosed animals can use heat detection and other senses when hunting. Global Tech