A pet decoration is an item created when a player drags a cosmetic pet skill onto any empty housing hook and spends a Pet Harness in exchange for a permanent item. The item tooltip appears this way when slotted in a housing hook, but has the name and icon of the pet chosen when in a player's inventory.
It also fits in a large furniture hook.
For details on how to use a Pet Decoration, see Cosmetic Pet Decoration.
(For Mount Decorations, see Mount Decoration)