Reasons for cats’ ears suddenly folding:

1. When there are mites in the cat’s ears, the cat will droop its ears because of discomfort. At this time, the owner must deworm the cat.

2. It may be caused by fear or comfort. It is not a disease, so don’t worry. This condition is commonly known as airplane ear.

3. It may be caused by having the folded ear gene and then being malnourished, leading to calcium deficiency, so cats need to be supplemented with calcium.