There are so many breeds of dogs, and their hair colors and styles are also ever-changing, but they seem to have one thing in common, that is, most of them have black noses. This makes people a little curious, why is the dog's nose black? Is it...
There are so many breeds of dogs, and their hair colors and styles are also ever-changing, but they seem to have one thing in common, that is, most of them have black noses. This makes people a little curious, why is the dog's nose black? Is it normal for dogs to have black noses? Let’s take a look at why dogs’ noses are black.
1. Protect the dog's nose from being burned by the sun
Since the dog's nose is not protected by hair, the black nose can effectively inhibit ultraviolet rays and prevent the dog's genes from genetic mutations under ultraviolet irradiation. In turn, after exposure to sunlight, these substances will further darken, so that the dog's black nose will become darker and darker without fading.
2. Intervention of people’s aesthetic tendencies during the breeding process
Dogs with black noses are more popular among people, so people will tend to continue this healthy characteristic when breeding new breeds. Although this is only a human aesthetic requirement and has no other meaning, it is also an artificial selection after all, and it will still affect the pedigree of domestic dogs.
