One To Many To Itself

ID INT NOT NULL PRIMARY KEY
SIRE_ID INT
DAME_ID INT

ID INT NOT NULL PRIMARY KEY
SIRE_ID INT REFERENCES TABLENAME (ID)
DAME_ID INT REFERENCES TABLENAME (ID)

[ID],[Sire_ID],[Dame_ID];
0,null,null  (male)
1,null,null  (female)
2,null,null  (female)
3,0,1 (male)
4,0,2 (male)
5,null,null  (female)
6,3,5
7,4,5

While (myAnimal.HasChildren) {
 Animal[] children = GetChildren(Animal.ID)
 for (int x=0; x<children.length; x++)
  myAnimal.Children.Add(children[x]);
}

ID          Primary Key,
 Parent_ID   Foreing_Key
 ( data )