Proper nutrition is extremely important for the Siberian cat breed. Even a slight deficiency of protein, vitamin E and essential fatty acids quickly affects the main wealth of Siberians - their luxurious fur coat. In addition, like all long-haired cats, they swallow a large amount of hairs when they wash. And if the diet lacks fiber, over time, these hairs form clumps that interfere with the normal functioning of the digestive system, and sometimes completely block the gastrointestinal tract. Outwardly, this is manifested by a decrease and loss of appetite, vomiting, and constipation.