Enchanted Jade



The Enchanted Jade teaches the Jade Tiger, a house cat companion.

Source
This pet is available through the Recruit-A-Friend program.

Warcraft Pets.com writes: "This pet was available for a limited time to all players on China servers if they [logged] in with a character between October 19th and November 24th 2009. This gift [was] given out via an in-game mail to welcome players back to Azeroth after Chinese servers had been offline for several months. In addition to receiving this pet, logging in also also [earned] eligible characters the Jade Tiger (achievement) achievement."

Pet Journal
Considered to be lucky, tigers carved of jade are prized, but taming a jade tiger itself is an even greater prize.