The most common birth defect in kittens is a cleft palate. Cleft palates can be caused by environmental factors. There are things you can do to reduce your chances of producing a kitten with this problem.
Coccidiosis is a parasitic infection that causes severe diarrhea, especially in weaning kittens or debilitated adult cats. Coccidiosis can cause death, especially in young kittens. This article explains treatment options and an effective way to prevent future infections of coccidia in your cattery.