In Cataclysm every hunter will have a pet starting at level 1. From what I've read right now the hunter pet is in perma defensive mode, you won't have any "control" over a pet until level 10 when you tame one of your very own. The pets are race specific.
Alliance Level 1 Hunter Pets
Night Elf: Nightsaber
Someone better let me tame a Mastiff or things will get highly ugly.