New to survival hunter and wondering what the best spec (ie. Ferocity, Tenacity, or Cunning) is best for a pet in raid situations?

Does anyone else think the new wolf model for WOD looks too.....fluffy? The details on it are great, however, the fur on the back of the neck is so poofy! I hope they decide to edit the model and streamline it a bit more.
 
Also, the "riverbeast" concept model looks cute....in an ugly sorta way XD