Congenital megacolon is not well studied in cats and dogs but does appear to occure in both species. Any age, breed or sex of animal may develop aquired megacolon, but idiopathic megacolon is more common in middle-aged to older cats. There is also some evidence for an increased risk of megacolon in Manx cats. | Congenital megacolon is not well studied in cats and dogs but does appear to occure in both species. Any age, breed or sex of animal may develop aquired megacolon, but idiopathic megacolon is more common in middle-aged to older cats. There is also some evidence for an increased risk of megacolon in Manx cats. |