When it comes to being a friend, dogs do it the best. And it’s not just because of how amazingly affectionate and caring they are. There's actual scientific proof that dogs can easily judge a person and their intentions. However, their abilities don’t just end there. In fact, they’ve been known to detect illnesses, earthquakes, and so much more before humans could even guess what was going on. All of that will be explained later in the video, so keep watching! For now, here’s how dogs can recognize if a person is bad or good. Dogs have a whole range of senses they rely upon, but their primary sense is smell. That’s why even a fancy Afghan Hound with long locks knows exactly what's going on around it. This heightened sense can help them pick up a number of cues from human beings. Humans all secrete pheromones, which help dogs sniff out the emotion we’re feeling. That’s why they can sense fear, anxiety, happiness, and many other emotions. But that’s not all. Pups are excellent at reading body language, whether it’s a stranger or the owner itself. If you’re around someone that makes you anxious, the dog becomes wary of that person. A study was published in Neuroscience and biobehavioral review which claimed that dogs could tell who is a good person and who’s a meanie at heart. More importantly, they can tell when one human is being mean to another. To come to this conclusion, researchers put a number of dog owners in a plethora of different scenarios while their dogs watched by. The scenario consisted of the owners pretending to struggle while opening a jar. After a while, they would ask two researchers for help as part of the experiment. In one instance, one researcher stood idly while the other helped. The second scenario consisted of one researcher who refused to help and another simply standing there. After this experiment was done, the mean researcher and the passive researcher both offered the dog a treat-- the reality finally proved that dogs are all indeed very good boys and girls. All the volunteer dogs refused to eat a treat provided by the researcher that refused to help! Long story short, dogs are pretty aware of their owners, and the people around them. If your dog hints at someone being creepy or dangerous, you better believe them! A three-part experiment done by Akiko Takaoka of Kyoto University revealed a lot about the behavioral patterns of dogs. First, dog owners were instructed to point at a container of food. Then, they would be presented with empty containers, and this alternating pattern between empty and full containers created doubts within the dogs. They'd get super disappointed when the said food container was smooth. The inconsistency of their owner’s gestures made them visibly anxious and stressed. So much so that in the third round, all of the 34 dogs in the experiment ignored the hand that would point at the empty food bowl. This shows that dogs refuse to believe anyone who lies to them, even if it’s their own owner. Many studies show dogs end up ignoring and even avoiding people who are rude to their owners or aren’t honest with them. It’s not just their judgment that’s good. Their memory is a complex and complicated piece of biology, but it works in a way that dogs can remember your scent forever. An owner's scent activates the pleasure centers in the dog’s brain. The caudate nucleus is the part that's mainly triggered by a familiar scent, which means it stays stored there for a long time. Their memory is reinforced by the fact that dogs have three hundred million olfactory receptors in their nose, whereas we only have 6 million. With such a huge range of abilities, dogs can remember their owners forever since they make sure of facial and voice recognition along with remembering our events.