A small insect with pincers at its rear can look alarming beside a rug. A flattened body and prominent tail forceps are characteristic of an earwig, the insect illustrated here.
Earwigs favor dark, damp hiding places and are active at night. University of Minnesota Extension describes them as household nuisances rather than insects that damage people, property or food. Their forceps help with defense and holding prey; their alarming appearance does not make them a major household threat.
If one turns up indoors, a broom and dustpan or vacuum can remove it. Reducing excess moisture and sealing gaps near doors or windows can help discourage further visitors. Avoid handling an unfamiliar insect. If a pet becomes unwell after an insect encounter, seek veterinary advice rather than relying on a photograph for reassurance.
Sources: University of Minnesota Extension: Earwigs Original linked story