Case-bearing clothes moth larva (likely)

Indoors, especially closets, carpets, and stored textiles containing natural animal fibers.

Larvae feed on keratin-containing materials such as wool, fur, feathers, and hair.

The larva carries a fibrous, spindle-shaped case and retreats into it when disturbed; adults are small moths and do not feed on textiles.

Larvae can damage clothing and furnishings made from natural fibers. They are not dangerous to people or pets.