Yes, a kitten with droopy ears after birth is a cat with folded ears. Folded ears are a dominant inheritance, and parents who have folded ears must have folded ears. Cats with folded ears have hidden dangers of disease and will suddenly fall ill one day. The owner can control it by supplementing calcium and nutrients. In addition, cats with erect ears can mate with cats with folded ears, but two cats with folded ears cannot mate.