Source: Monsters of Faerûn, p. 59
They are about nine feet tall and have four arms, the upper arms being much larger than the lower ones. They have large claws on the upper arms and they use them for hand-to-hand combat, delighting in the carnage and death they can cause in melee. As such, they wade into battle without fear, and hold little consideration for tactics; though not unintelligent, Draegloths are impatient when it comes to slaughtering their prey. Their face is stretched so it resembles that of a dog. Their flesh is as dark as a drow's, and they are covered in a fine coat of fur; they also have a white mane. Draegloths are immune to poisons and sleep inducing spells and effects. They are sacred creatures to the Lolthites and are usually treated with respect. Draegloths are perhaps the only variety of half-fiend that are created regularly and intentionally by a mortal race.
Draegloths are created usually about once per decade, and are often seen as a sign of favour from Lolth.