Do you need information about Maine Coon cats? When you own a Maine Coon or welcome one into your family, read our guide to their personalities and learn more about common health problems and diseases. Maine Coon is a gentle giant and can't help but make his presence known in your home. Maine Coon is relaxed, affectionate and loves to be with his cat or human family. Maine Coon is the largest and heaviest pedigree cat.