If a cat owner notices their cat chewing on cardboard boxes, they should stop it immediately. Some cats will stop chewing after being scolded by their owners, but some cats do this because they are deficient in trace elements, so they will ignore the advice and continue chewing on the cardboard boxes. 
Besides chewing on cardboard boxes, cats may also be interested in other foreign objects, such as hair, slippers, plastic bags, wall paint, cat litter, etc. The cat's body will undergo some changes, with large areas of fur falling out, and the originally pink or black nose turning white.
Reasons for cats lacking trace elementsNowadays, cats mainly grow up on cat food, mainly because it is convenient to feed, does not require cooking, and can be stored for a long time. However, cat food contains very few trace elements, which are very important for a cat's health.
If a cat owner feeds their cat cat food for a long time without supplementing it with trace elements, the cat's body will lack trace elements, and it will like to chew on foreign objects to absorb trace elements from them.
Methods to supplement trace elementsNow that the cat owner knows that the cat chewed the cardboard box because it was deficient in trace elements, the owner should supplement it with some trace elements. In addition to feeding it cat food, the owner can also feed it some cat-specific trace elements, such as mineral supplements, which can be directly mixed into the cat food and fed evenly. However, it takes time for cats to absorb trace elements.
During this period, it may still chew on cardboard boxes whenever it sees them. Cardboard boxes are relatively difficult for cats to digest, and eating too much cardboard can easily cause diarrhea and vomiting. Therefore, cat owners should pull the cat away from eating cardboard boxes as soon as they see it, so as not to let it continue to eat them. After the cat has been supplemented with trace elements, it will become normal and stop eating cardboard boxes.
