Bed bug

Often hides in mattress seams, bed frames, furniture, and cracks near sleeping areas.

Feeds on blood, primarily from humans; usually feeds at night.

Flat, wingless, reddish-brown insects that hide in groups and emerge to feed. Females lay small eggs in sheltered crevices.

Bites can cause itchy skin reactions and disturb sleep, but bed bugs are not known to transmit diseases. The image suggests a bed bug, though a single photo may not confirm identification.