Disposophobia

Pack rat
Related: Vertebrates

Rodent of the genus Neotoma, of North and Central America, noted for its habit of collecting bright, shiny objects and leaving other objects, such as nuts or pebbles, in their place; also called trade rat or wood rat.

The fear of getting rid of stuff may have something to do with
evolution. But there is a cure for the chipmunk who hoards acorns.