Some bunnies have bright coats when they are young, but become darker as they grow up, and some bunnies are pure black in winter and turn gray or brown in summer of. What has actually happened? Let's find the answer together from a scientific point of view!

    I mentioned in my article explaining why rabbit eyes are red, The direct factor that affects the color of the rabbit's eyes is the pigment, and the most direct factor that affects the color of the rabbit's coat is the pigment. This pigment exists in the cortex of rabbits and is collectively referred to as melanin: one type is brown-black, which is red small round particles under a microscope, easily soluble in alkali; the other type is called melanin, including black and brown. Types of pigments, all of which are less soluble than pheomelanin. Under the action of different oxidases, different types of melanin are formed in the body. And these enzymes are particularly sensitive to temperature, and some enzymes are only active at lower temperatures. When the weather is cold in winter, when these enzymes are often active, the rabbit's coat color is relatively darker; after the weather warms, the activity of oxidase decreases, the color becomes lighter, and the original black area becomes dark gray. The discoloration of the rabbit is not only a change in pigment, but a growth-type molting, replacing the fluff that was originally used for warmth, which is a sign of growing up.

    I heard some rabbit friends say that their rabbits don't look as good as they used to be after molting, but you don't need to worry about it. . When the weather gets colder, the color of the bunny's fur will change back again. If you usually pay attention to nutrition, the rabbit is healthy and the back hair is shiny, no matter what color it is, it is not so important.