Me and my buddy ran into "frozen" wolves on my server, no clue what caused it, I do use custom spawns for the wolves
Here are my spawns and events for the wolves
<event name="AnimalWolf">
<nominal>20</nominal>
<min>5</min>
<max>10</max>
<lifetime>180</lifetime>
<restock>0</restock>
<saferadius>200</saferadius>
<distanceradius>0</distanceradius>
<cleanupradius>0</cleanupradius>
<flags deletable="0" init_random="0" remove_damaged="1"/>
<position>fixed</position>
<limit>child</limit>
<active>1</active>
<children>
<child lootmax="0" lootmin="0" max="7" min="4" type="Animal_CanisLupus_Grey"/>
<child lootmax="0" lootmin="0" max="3" min="1" type="Animal_CanisLupus_White"/>
</children>
</event>