1, the reason for blue eyes is the lack of iris. Dogs without iris are more likely to suffer from night blindness, so blue-eyed dogs don't advocate continuing to breed. Of course, the offspring of blue-eyed dogs are not necessarily blue-eyed, but as a responsible owner, considering the health of border herders, they will not mate with blue-eyed border herders (except meteorites).
2. The boundary of meteorites, the color of meteorites is genetic variation. The blue eyes of meteorite color are different from those of other colors, so only meteorites are allowed to have blue eyes. In other words, meteorite blue eyes will not affect health, and other border grazing blue eyes may have an impact on health.
Extended data:
Border Collie is a kind of sheepdog, which originated from the Scottish border. It has a strong shepherd instinct, intelligent nature, is good at reading words and feelings, can accurately understand the owner's instructions, and can drive the sheep to move or rotate through eyes. For many years, it has been regarded as a sheepdog, ranking first in IQ among dog breeds in the world.
It is characterized by intelligence, strong learning ability, high understanding, easy training, good communication with its master, gentleness, loyalty and good obedience. Its loyalty can be described as. Because of its gentle and loyal character, it was once the most popular pet for urban people. Moreover, the Border Collie is the most competitive Frisbee dog breed, and it is the protagonist of the Frisbee Dog World Cup competitions over the years.
Baidu Encyclopedia: Border Collie