Cats can eat grass, and this is also their necessary eating habit. Whether it is foxtail grass or other types of grass, it is to stimulate the cat’s gastrointestinal tract so that the undigestible hair balls in the intestines can is vomited out, and this plant fiber can promote gastrointestinal motility in cats, which is very good for cats. However, try not to feed outdoor weeds to cats to avoid pesticide poisoning. It is recommended that owners buy some cat grass. You can plant it yourself in a small pot, and feed it to the cat regularly. If you don't want to be so troublesome, you can also choose to feed hair removal cream.