Stinker
From Shop Smart, Shop Pet...Smart. Stinker uses his aroma to repel predators and attract cats. He's much more successful with the former than the latter. Critter type. The letter you receieve from Breanni, attached to this little bugger is as follows: I've heard how well you take care of our furry friends.
Stinker is a skunk companion rewarded by completing the 'Shop Smart, Shop Pet...Smart' achievement, which requires collecting 50 vanity pets, and is mailed to you by Breanni upon completion.
Guide awaiting review
Collect 50 Vanity Pets
Gather 50 vanity pets to fulfill the 'Shop Smart, Shop Pet...Smart' achievement. Vendor pets available to both factions include the Blue Dragonhawk Hatchling, Brown Rabbit Crate, Cat Carrier (Siamese), Mana Wyrmling, Red Moth Egg, Cockroach, and Crimson Snake all sold in Netherstorm, the Parrot Cage (Cockatiel) and Parrot Cage (Senegal) sold in Stranglethorn Vale, and the Ancona Chicken sold in Thousand Needles.
Collect Alliance-Specific Pets
Alliance players can also purchase the Rabbit Crate (Snowshoe) in Dun Morogh and the Cat Carrier (Bombay), Cat Carrier (Cornish Rex), and Cat Carrier (Orange Tabby) in Elwynn Forest to help reach 50 pets.
Receive Stinker by Mail
Once the achievement is completed, Breanni automatically mails you the Reeking Pet Carrier containing Stinker, along with a note asking you to feed him twice a day and warning that he has a thing for black cats.
Tips
Several pets listed in the player data were not yet implemented as of Patch 3.0, including the Baby Shark, Cobra Hatchling, Frosty, Ghostly Skull, Giant Sewer Rat, Proto-Drake Whelp, and Penguin variants, so plan your 50-pet collection around pets that are actually available.
