<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="Animal" />
  <url value="http://example.org/StructureDefinition/Animal" />
  <version value="1.0.0" />
  <name value="Animal" />
  <fhirVersion value="4.0.1" />
  <kind value="logical" />
  <abstract value="false" />
  <type value="http://example.org/StructureDefinition/Animal" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Base" />
  <derivation value="specialization" />
  <differential>
    <element id="Animal">
      <path value="Animal" />
      <short value="Animal" />
      <definition value="Animal" />
    </element>
    <element id="Animal.name">
      <path value="Animal.name" />
      <short value="The animal's name" />
      <definition value="The animal's name" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Animal.age">
      <path value="Animal.age" />
      <short value="The animal's age in years" />
      <definition value="The animal's age in years" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="decimal" />
      </type>
    </element>
    <element id="Animal.traits">
      <path value="Animal.traits" />
      <short value="The animal's abilities" />
      <definition value="The animal's abilities" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="http://example.org/StructureDefinition/AnimalAbilities" />
      </type>
    </element>
  </differential>
</StructureDefinition>