cave_rat.xml

<monsters>
  <monster>
    <clone>rat</clone>
    <level>2</level>
    <name>Cave Rat</name>
    <description>
      The rats down here are bigger.
    </description>
    <key>cave_rat</key>
    <tags>animal</tags>
    <life>18</life>
    <speed>110</speed>
    <defaultAttackName>teeth</defaultAttackName>
  </monster>
</monsters>