If I am reading the code correctly then pets default to taunting on, but it can be turned off. 
 
There's no message for each taunt, but there is a message when you turn taunt on or off. 
 
Try using #hatelist to see what's up.  Keep in mind if the pet roots then the mob will attack the closest target, not the top of the hate list. 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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