Dear Napster, 
 
If the sentence actually reads:
 
"The lion lurks its_____ ." with one word missing, then it doesn �t make sense to me.
 
Oxford English Dictionary: LURK verb; no object.  "To be or remain hidden so as to wait in ambush for someone or something".  "A ruthless killer still lurked in the darkness!"  "Danger lurks beneath the surface".
 
If, instead of �lurks �, the verb was �hunts �, or �awaits �, or �stalks �, the sentence could be:
The lion hunts its prey / game / victim / quarry / kill / target / mark.
 
However, the sentence, as written above, with one word missing, does not make sense to me.
 
Although it won �t be a satisfactory answer to you, I hope that it helps you.
 
Les
 
PS.  In a University Forum, a little bit like this one, (except that students are expected  to make a contribution), a �Lurker� is a student who makes NO contribution, but �lurks around�, doing nothing, simply waiting to pick up all the useful information posted by other, more conscientious students.