Asian Common Toad

The Asian common toad grows to about 20cm. It has been recorded from sea level up to 1,800m and lives mostly in disturbed lowland habitat, from upper beaches and riverbanks to human-dominated farmland and urban areas. Adults are terrestrial and may be found under rocks, leaf litter and logs, and are also associated with houses (Wikipedia, general species account).

The account opened gives its range as wide across South and Southeast Asia. It does not say where in Bhutan the species occurs, so none is stated.