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A behir (pronounced: /bɛˈhɪərbe-HEER[7] about this audio file listen; plbehir[4][5] orbehirs[1][3]) was a great serpentine monster with twelve legs and electrical breath.[3][4]


A behir was often mistaken for a wingless blue dragon.[6] 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.[3][4] Each of a behir's twelve feet contained three clawed toes.[6] They began life with six or eight legs and grew additional legs as they aged. They grew about 8 feet (2.4 meters) per year.[4]

Behirs had thick, armored scales, much like a dragon. Their scales were colored in variations of dark blue, being lighter on their undersides.[3][4]

They had long narrow heads,[6] crocodilian in shape,[4] with curved, black horns on the top,[6][3] which were used for preening.[3][4] Their mouths were full of many sharp teeth.[6]

Newborn behirs were about 2 feet (0.61 meters) in length,[4] while the typical adult behir was around 40 feet (12 meters)[3][4] and weighed about 4,000 pounds (1,800 kilograms).[3] Behirs reached adulthood at the age of ten and like other reptilian creatures would continue to grow throughout their lifetimes, having to shed their scales periodically..[6] Because of this behirs could sometimes reach gargantuan sizes.[3]


Behirs were known to be expert climbers.[3][4] They were surprisingly quick, and could outrun the typical human.[6][3]

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.)[3][4] There were some reports that they were immune to poisons as well.[4]


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.[3][4]


Halruuan behir
Halruaan behirs were a miniature species native to Halruaa, where they were bred as pets or guardians.[8]


A behir having a giggle.

Behirs were usually solitary creatures, but could be found in mated pairs,[3][4] though this only lasted until their eggs were hatched.[4] They were most active during the day.[6] And during the winter months they hibernated.[6]

Mating took place in early spring. Females produced between one and four blue-green, leathery eggs, which were buried under dirt or sand.[6] 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.[4] Others insisted that it only took three or four weeks.[6] The young were driven from the den soon after hatching.[6]


Behirs were a carnivorous species. Their main diet consisted of medium-sized animals, such as boars.[6]


Behirs preferred to live in warm, hilly terrain.[3] They made dens in caves—which were often in the side of high cliffs[4]—or hidden thickets.[6] A behir's territory usually encompassed an area of 400‑square-mile (1,000,000,000‑square-meter).[4]


Behirs were capable of speaking both Common[3] and the Draconic language..[1]


Behirs sometimes served the dark Chultan demigod Eshowdow, and were seen as good omens by his followers.[9]

Behirs hated all dragons and would refuse to share any territory with them.[3][4]


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.[4]

Behir scales were sometimes used to make armor, much like the hides of dragons.[4]


In 1492 DR, a behir dwelt on the Troglodyte Warrens level of Undermountain.[10]

Notable Behirs[]


In the city of Memnon, an inn called the Brazen Behir had a lifelike statue of a behir that formed its main gate.[15]



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Further Reading[]


  1. 1.0 1.1 1.2 1.3 Mike Mearls, Jeremy Crawford, Christopher Perkins (2014-09-30). Monster Manual 5th edition. Edited by Scott Fitzgerald Gray. (Wizards of the Coast), p. 25. ISBN 978-0786965614.
  2. Rob Heinsoo, Stephen Schubert (May 19, 2009). Monster Manual 2 4th edition. (Wizards of the Coast), pp. 22–23. ISBN 0786995101.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 Skip Williams, Jonathan Tweet, Monte Cook (July 2003). Monster Manual v.3.5. (Wizards of the Coast), p. 25. ISBN 0-7869-2893-X.
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 Doug Stewart (June 1993). Monstrous Manual. (TSR, Inc), p. 20. ISBN 1-5607-6619-0.
  5. 5.0 5.1 Gary Gygax (August 1983). Monster Manual II 1st edition. (TSR, Inc), p. 18. ISBN 0-88038-031-4.
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 Tony Jones (April 1990). “The Ecology of the Behir”. In Roger E. Moore ed. Dragon #156 (TSR, Inc.), pp. 101–105.
  7. Frank Mentzer (January 1985). “Ay pronunseeAYshun gyd”. In Kim Mohan ed. Dragon #93 (TSR, Inc.), p. 25.
  8. Thomas Reid (October 2004). Shining South. (Wizards of the Coast), p. 61. ISBN 0-7869-3492-1.
  9. Eric L. Boyd (1997). Powers and Pantheons. (TSR, Inc), p. 81. ISBN 0-7869-0657-X.
  10. Christopher Perkins (November 2018). Waterdeep: Dungeon of the Mad Mage. Edited by Jeremy Crawford. (Wizards of the Coast), p. 158. ISBN 978-0-7869-6626-4.
  11. Steven E. Schend, Sean K. Reynolds and Eric L. Boyd (June 2000). Cloak & Dagger. (Wizards of the Coast), p. 148. ISBN 0-7869-1627-3.
  12. Ed Greenwood and Jason Carl (July 2002). Silver Marches. (Wizards of the Coast), p. 9. ISBN 0-7869-2835-2.
  13. Richard Baker, Eric L. Boyd, Thomas M. Reid (July 2007). Shadowdale: The Scouring of the Land. (Wizards of the Coast), p. 63. ISBN 07-8694-039-5.
  14. Erin M. Evans (October 4th, 2016). The Devil You Know. (Wizards of the Coast), p. 370. ISBN 978-0786965946.
  15. Steven E. Schend and Dale Donovan (September 1998). Empires of the Shining Sea. (TSR, Inc), p. 113. ISBN 978-0786912377.