Behir A behir ( pronounced be - HEER ) was a great serpentine monster with twelve legs and an electrical breath . Description . A behir was often mistaken for a wingless blue dragon . It had a long , snake - like body and could slither on the ground like a snake , but it also had six pairs of legs upon which it could walk or climb if it chose to do so . Each of a behir ' s twelve feet contained three clawed toes . They were surprisingly quick , and could outrun the typical human . Behirs had thick , armored scales , much like a dragon . Their scales were colored in variations of dark blue , being lighter on their undersides . They had long narrow heads , crocodilian in shape , with curved , black horns on the top , which were used for preening . Their mouths were full of many sharp teeth . A typical adult behir was 40 feet ( twelve meters ) long and weighed two tons ( 1 , 800 kilograms ) but could grow to gargantuan sizes . They were expert climbers . Variations . A subspecies of behir were native to Halruaa and were bred there as pets or guardians . Personality . Behirs hated all dragons and would refuse to share any territory with them . They were not particularly intelligent but could speak Common . Behavior and Ecology . Behir were most active during the day . Their main diet consisted of medium - sized animals , such as boars . In the winter months , behirs hibernated . Mating took place in early spring . Females produced between one and four blue - green , leathery eggs , which were buried under dirt or sand . There were conflicting reports about how long it took for their eggs to hatch . Some sources claimed it took eight months for them to hatch . Others insisted that it only took three or four weeks . The young were driven from the den soon after hatching . Hatchlings were about two feet ( half a meter ) long and did not yet have their full compliment of twelve legs . They began life with six or eight legs and grew additional legs as they aged . They grew about eight additional feet per year . Like other reptilian creatures , behirs continued to grow throughout their lifetimes and had to shed their scales periodically . They reached adulthood by ten years . Combat . If a behir grabbed a hold of an opponent or prey with its mouth , it had several options . It could wrap its body around the victim and constrict , it could tear at the victim with its many clawed limbs , or it could simply swallow the victim whole . Behirs could breath a magical burst of electricity from their mouths , much like a blue dragon . ( They themselves were completely immune to damage from electricity . ) There were some reports that they were immune to poisons as well . Society . Behirs preferred to live in warm , hilly terrain . They made dens in caves — which were often in the side of high cliffs — or hidden thickets . A behir ' s territory usually encompassed an area of 400 square miles ( 1 , 000 square kilometers ) . They were usually solitary creatures but could be found in mated pairs , but only until their eggs were hatched . Uses . Behir horns could be used to make the ink necessary for scribing a magic scroll for a " lightning bolt " spell . Similarly , a scroll of " neutralize poison " often used ink from a behir ' s talons , and that of " protection from poison " used ink made from a behir ' s heart . Behir scales were sometimes used to make armor , much like the hides of dragons .