House cat

A small type of Cat that is seen around some NPCs and most of which can be purchased from the Crazy Cat Lady as a "vanity" pet in the Elwynn Forest. One type can be purchased from Lil Timmy ([1]) in Stormwind.

Crazy Cat Lady Housecats

Bombay

A black cat with golden eyes. Summoned by Cat Carrier (Bombay): [2]

Cornish Rex

A cat colored with splotches of orange and white, with dark yellow eyes. Summoned by Cat Carrier (Cornish Rex): [3]

Orange Tabby

An orange cat with deeper orange stripes and golden eyes. Summoned by Cat Carrier (Orange Tabby): [4]

Silver Tabby

A silver cat with black stripes and yellow-green eyes. Summoned by Cat Carrier (Silver Tabby): [5]

Lil Timmy Housecat

White Kitten

A small white cat with golden eyes. Sold by Lil Timmy, a rare spawn in Stormwind, for 6060.

Summoned by Cat Carrier (White Kitten): [6]

This cat is a rare sight for members of the Horde, due to the difficulty of obtaining one. One would have to buy it from an Alliance member on the neutral Auction House, and can often sell for up to 25, despite its low purchase cost.

Drops

Black Tabby

Dropped by Dalaran Spellscribe: [7] Summoned by Cat Carrier (Black Tabby): [8]

Prior to Patch 1.6, this cat was known as the Maine Coon, but this was changed because the game's Profanity Filter censored the word "coon" for also being a derogatory term for people of African descent.

Siamese

A cat with a cream body, white paws, brilliant blue eyes, and brown ears, face, legs, and tail.

The siamese cat is dropped by Cookie in the Deadmines.