What kind of dog is Hachiko? How many times stronger is a dog's sense of smell than a human's?

Dogs (Latin: Canis lupus familiaris) belong to the phylum Chordata, subphylum Vertebrata, class Mammalia, subclass Eutheria, order Carnivora, suborder Schizopoda, family Canidae. Also known as "dog" in Chinese, dogs belong to the order Carnivora and are distributed all over the world. So what kind of dog is Hachiko? How many times stronger is a dog's sense of smell than a human's? Let's take a look at the introduction of Encyclopedia Knowledge Network!

Contents of this article

1. What kind of dog is Hachiko?

2. How many times better is a dog's sense of smell than a human's?

3. Can dogs be brought on high-speed trains?

What kind of dog is Hachiko?

Hachiko is an Akita dog. Born on November 10, 1923, Hachiko is a legendary loyal dog in Japanese history.

Hachiko's lifelong loyalty to his master moved many people. In order to commemorate Hachiko, Japan set up a bronze statue of him at Shibuya Station in Tokyo. Hachiko was adopted by Professor Hidesaburo Ueno of Tokyo Imperial University in January 1924. Hachiko would go to Shibuya Station every day to welcome his master back home, and he would go to the station every day to wait for him even after his master passed away. This wait lasted for nine years. Hachiko died nine years after Professor Ueno's death. After Hachiko's death, Mrs. Ueno and Mr. and Mrs. Kobayashi, who had adopted Hachiko, held a funeral for Hachiko. The story of Hachiko was adapted into the Japanese movie "Hachiko: A Dog's Tale" in 1987, and was remade into the American movie "Hachiko: A Dog's Tale" in 2009.

How many times better is a dog's sense of smell than a human's?

A dog's sense of smell is more than 40 times that of a human. Smell is the sense of sensing chemical stimuli over long distances. The ability to smell depends on the number of olfactory cells. Humans have only 40 million olfactory cells, while dogs have 2 billion.

The sense of smell is mainly involved in the olfactory nervous system and the nasal trigeminal nervous system, and the olfactory receptors are located on the nasal mucosa above the nasal cavity.

Different people have very different olfactory sensitivities to the same odorant. Some people even lack the ability to smell that ordinary people have. We usually call it olfactory blindness.

A dog's ability to detect smells is 1 million or even 10 million times that of a human, and their ability to distinguish smells is more than 1,000 times that of a human.

Can I bring a dog on the high-speed train?

Dogs are not allowed on high-speed trains, but guide dogs are allowed. You need to show proof of visual impairment and a work certificate for the guide dog. After the security personnel have checked and confirmed that there are no problems, you can bring the guide dog on the high-speed train, and the guide dog must wear a leash and a guide saddle.