Papa Hummel's Old-Fashioned Pet Biscuit

This article contains information from the Trading Card Game which is considered non-canon.

Source

Available only to those who receive the Papa Hummel's Old-Fashioned Pet Biscuit card in the World of Warcraft Trading Card Game that has the "scratch off gently" strip. Once you scratch and reveal the code, you can turn it in to Landro Longshot in Booty Bay.

Useable only on Non-Combat Pets.
Also useable on the orphans that players can summon during the Children's Week Quest-chain.
Buff fades from pet when it is dismissed.
Doubles the size of Non-Combat Pets (15 yd range).
Named after TCG designer Mike Hummel.
You receive a stack of 50 biscuits when you redeem the code. Can stack up to 250.
Is a super-common loot card, a few drop per box.
Useable at any level and therefore available for twinks.

Emphasis: This buff is not permanent. It fades from the pet every time the pet dissapears, for example, every time your character dies or rides on a gryphon, requiring the biscuit to be re-applied. Thus the 50 biscuits can be used up very quickly.

Note: This item also is included in World of Warcraft: Wrath of the Lich King Collecter's Edition