Asian House Gecko

The Asian house gecko, also called the common house gecko or wall gecko, grows to 7.5 to 15cm and lives about seven years. The Reptile Database gives its range as worldwide in tropical and subtropical regions. The name frenatus, meaning bridled, refers to the dark streaks on the sides of the head (Wikipedia, general species account).

Females lay a maximum of two hard-shelled eggs at a time. It is nocturnal, hunting insects at night on walls and around lights, and recognisable by its chirping call. The sources opened do not say where it occurs in Bhutan.