IOS：识别通用对象

if ([object_selected isKindOfClass:[Person class]]) {

    Persone *obj = (Persone*)object_selected;
    NSString *name = obj.nome;
    NSString *surname = obj.surname;

}
else if ([object_selected isKindOfClass:[Animal class]]) {

        Animal *obj = (Animal*)object_selected;
        NSString *name = obj.nome;
        NSString *breed = obj.breed;

    }

通过这种方式,我应该验证我的对象是否属于一个类以获取其属性,但是有更快的方法从我的对象获取属性“name”吗？
所有对象都具有“name”属性.

谢谢