No change in size ,  14:13, 23 December 2008
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*The whole life cycle takes 2-3 weeks
 
*The whole life cycle takes 2-3 weeks
   −
*The louce spends its whole life on the animal
+
*The louse spends its whole life on the animal
 
**It can however survive for one week off the animal
 
**It can however survive for one week off the animal
  
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