Dogs are a common animal in our lives. Because of their sensitive sense of smell, many people in life use "more than dog's nose" to describe people with a good sense of smell. This also shows to a certain extent that dogs have a really sensitive sense of smell.

Dogs are a common animal in our lives. Because of their sensitive sense of smell, many people in life use "more than dog's nose" to describe people with a good sense of smell. This also shows to a certain extent that dogs have a really sensitive sense of smell.

Because of the sensitive nose of a dog, this has also been used by people in real life, such as finding some special things, and even looking for drugs, etc., are the actual use of dogs in life.

According to media reports, researchers trained 20 dogs to perform olfactory tests, and four dogs performed particularly well. In 700 tests, these four dogs smelled samples of breath and sweat that were exhaled after the person developed stress. Simply put, dogs can smell human pressure.

As advanced animals, we all know that many things that dogs can smell cannot be smelled by humans. So what are the differences between dogs' olfactory system and humans' olfactory system? In some places, some people say that babies have a sense of smell more effective than dogs’ noses. Is there any scientific basis for this statement? Today, the editor will share this issue with you.

Different olfactory system and human olfactory system

In terms of the olfactory system, in fact, the difference between the dog's olfactory system and the human olfactory system is very big. Our human olfactory cells are concentrated in the nasal cavity, but dogs strictly have two sets of olfactory systems, one is similar to our humans, but in addition to the olfactory system similar to our humans, dogs also have another set of olfactory system. The dog's sense of smell is more sensitive than humans. The biggest difference lies in this.

Light from the same olfactory system as humans, dogs' olfactory system is stronger than humans. We all know that the human olfactory system mainly relies on the olfactory nerve endings in the nasal cavity.

In terms of size, although humans are much larger than dogs, the dog's nasal cavity is very long, which causes the dog's olfactory nerves to occupy a larger area. The area occupied by human olfactory cells is about 2 to 11.5 square centimeter , but the area occupied by dog's olfactory cells reaches 75 to 150 square centimeters. It can be seen that this is a part similar to the human olfactory system. The dog's sense of smell has exceeded that of humans, about 40 times that of humans.

In terms of the number of olfactory cells, the olfactory cells in the nasal cavity of dogs are also far higher than those of humans. The human olfactory cells are about 5 million, but the dogs generally have more than 100 million olfactory cells. If it is some dogs with better sense of smell, the olfactory cells in the nasal cavity may even exceed 200 million. This shows that the difference is so big.

Another olfactory system for dogs

The editor mentioned above that dogs have two olfactory systems, so what is the other olfactory system? For us humans, we only have one olfactory bulb, but many animals also have secondary olfactory bulbs, which is a key reason why real animals can smell different odors.

813, Danish anatomists first discovered animals with special sense of smell. Although the secondary olfactory bulbs of these animals are connected by nerves, they ultimately do not lead to ordinary nerves in the nasal cavity, but to the vivosar near the junction of the nose and mouth. The colosar organ can analyze hormones and distinguish the physical state of the animal.

There is a word called pheromone in the animal world. In fact, the reason why many animals have "sensitive" sense of smell is mainly because of the existence of the vomeronasal organ. For example, snake , dogs and other animals can analyze the pheromone received through the vomeronasal organ. When a female dog emits sexual hormones, after receiving this pheromone, the male dog can analyze the pheromone through the vomeronasal organ to determine that the female dog is in estrus.

The baby's nose is more flexible than a dog?

In some places, there is indeed a saying that babies have a nose that is more flexible than dogs, but through the above introduction, we can find that this is impossible, but do babies have a more sensitive sense of smell than adults? This is objective.

When we mention this question, many of our friends will think of a question, that is, why do people do not have the organ of the vomerostrum? In fact, humans do not have the organ of vomeronas, and they still exist until now.

Scientists have studied human vomeronas and found that the embryo's vomeronas are clearly visible, but after the baby is born, the vomeronas deteriorates seriously. At this time, the baby still has a vomeronas, so when the baby is born, they can find breast milk without any learning. This is called innate behavior in biology. However, some studies believe that this is mainly because babies analyze breast milk information through the vomeronas, so newborn babies can accurately find the location of the breast milk, and rely on the vomeronas.

From this we can see that it is impossible to say that babies have a sense of smell more effective than dogs, but because they have a colossar device, they can indeed smell that adults cannot smell, and they can analyze pheromones, while people will emit different odors at different times. Animals rely on colossar device to analyze these odors that we cannot smell, thereby making judgments on different situations of people.

From this point of view, it is indeed scientifically based on saying that babies have a more flexible nose than adults. #Telebrity Creation Challenge#