Hippogryph Hatchling

TCG undefined

The Hippogryph Hatchling item summons and dismisses a Hippogryph Hatchling, a baby hippogryph Companion that follows you around, meaning it is a non-combat pet and will not aid you in battle.

Source
The Hippogryph Hatchling is available only to those who receive the Thunderhead Hippogryph 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  who will give you your Hippogryph Hatchling.