The reasons why cats keep foaming at the foam:

1. Stress: The reason why cats keep foaming at the foam may just be stress. The symptoms of stress in cats vary. Unusual changes in mood and behavior may occur.

2. Accidentally eating inedible foreign objects: In this case, the cat will continue to vomit and foam.

3. Hair ball disease: If it is caused by hair ball disease, you can give the cat hair removal cream or cat grass to help the cat expel hair balls.

4. Greedy and overeating: Cats may suffer from indigestion and foaming at the mouth after overeating.

5. If the cat vomits and the vomited liquid is white, transparent, and sticky, it may be caused by gastrointestinal disease.

6. Cats’ oral diseases, such as stomatitis, chronic gingivitis, dental calculus and other diseases, can easily cause excessive oral secretions in cats, and may also cause cats to foam at the mouth.