It is the first Enrichment Object. It came out in April 2013 with a contest in the news. It will be findable in the haunted swamp when the haunted swamp when it comes out(Hopefully soon!) but for now there are only a few. They can be equipped in either nests or clans. It keeps the like score of feli above or at zero except for pregnant feli, they still hate every other feli.
Description: (Special) The concept of a mobile made out of animal bones is a little creepy, but your cats seem to enjoy playing with it. This is an Enrichment Object.