C#

 <Zoos>
 <Zoo>
   <ZooId>234OI456<ZooId>
   <Name>The Zoo</Name>
   <Address>3456 Kramer</Address
   <ZipCode>92345-8922</ZipCode>
   <Animals>
     <Animal Type="REPTILE">Cobra</Animal>
   <Animals>
  <Zoo>
<Zoos>

  Mapper.CreateMap<ZooDAO, ZooBE>()
.ForMember(d => d.ZooId, e => e.ZOO_ID))
.ForMember(d => d.Name, e => e.ZOO_NAME))
.ForMember(d => d.Address, e => e.ZOO_ADDRESS))
.ForMember(d => d.ZipCode, e => e.ZOO_ZIPCODE));

public enum AnimalType
{
  INVALID,
  REPTILE,
  MAMMAL,
  INSECT
}

//BE class
public class Zoo
{
  public int ZooId {get; set;}
  public string Name { get; set; }
  public string Address {get; set; }
  public string ZipCode {get; set;}
  public List<Animal> Animals {get; set;} 
}

//BE Class
public class Animal
{
  public string Type {get; set;}
  public string Text { get; set; }
}