You don't really want to wander through this spooky forest with a werewolf, even a freindly one. "You've very welcome, but I'd rather continue on by myself.
"That's fine," relies the werewolf "but if you ever need me, give three wolf whistles; two short and one long, and I'll be there." He thanks you again and you both say your goodbyes and go your seperate ways.
A little later on you come across something else in the forest...