Behir

The serpentine behir crawls along floors and clambers up walls to reach its prey. Its lightning breath can incinerate most creatures, even as more powerful foes are constricted in its coils and eaten alive.
A behir’s monstrous form resembles a combination of centipede and crocodile. Its scaled hide ranges from ultramarine to deep blue in color, fading to pale blue on its underside.

Cavern Predators

Behirs lair in places inaccessible to other creatures, favoring locations where would-be intruders must make a harrowing climb to reach them. Deep pits, high caves in cliff walls, and caverns reached only by narrow, twisting tunnels are prime sites for a behir ambush. A behir’s dozen legs allow it to scramble through its lair site with ease. When not climbing, it moves even faster by folding its legs beside its body and slithering like a snake.
Behirs swallow their prey whole, after which they enter a period of dormancy while they digest. While dormant, a behir chooses a hiding place where intruders in its lair might overlook it.

Foes of the Dragons

In times long forgotten, giants and dragons engaged in seemingly endless war. Storm giants created the first behirs as weapons against the dragons, and behirs retain a natural hatred for dragonkind.
A behir never makes its lair in an area it knows to be inhabited by a dragon. If a dragon attempts to establish a lair within a few dozen miles of a behir’s lair, the behir is compelled to kill the dragon or drive it off. Only if the dragon proves too powerful to fight does a behir back down, seeking out a new lair site a great distance away.
Behirs of Toril While taming a usual behir is impossible, this hasn't stopped dwarves from trying a myriad of times. They have succeeded in making deals with behir in the past, but how this was done is lost. One of the great legends of the dwarven kingdom of Delzoun is of a great dwarf king who made an alliance with a behir and rode it into battle against the red dragon scourge Dyldreryrth.
The ancient southern land of Halrua has long bred behirs as guardians and pets. These Halruaan Behirs are smaller and more magical than there wild cousins.

Behir Loot

• 4d4 Behir Claws. Act as daggers that can cut through dragon scales, dealing an additional 3 (1d6) piercing damage when it hits a Dragon. A collection of 20 claws can be mastercrafted (Smith's Tools) into a Dragon Slayer.
• 2 Behir Fangs. Act as daggers. Can be crafted (Smith's Tools) into a dagger that deals an additional 5 (1d10) lightning damage on a hit.
• 1 Behir Hide. Acts as a tent. Can be mastercrafted (Leatherworker's Tools) into 2 sets of Studded Leather Armor of Lightning Resistance. 
• 1 Behir Tail. Acts as a whip. Can be carefully crafted (Leatherworker's Tools) into a whip that deals an additional 5 (1d10) lightning damage on a hit.