No, I think it's a screw up.
There's a lot of screw up:
Those two pics are supposed to be Halruaan Elders:
Well, I think it's pretty obvious the horse one isn't.
Those three pics are supposed to be Beguilers:
One could assume the Beguiler is the first, and that it's a Prestige Class.
But in the AD&D2e Monster Compendium 11, we have:
The beguiler is a plump quadruped about the size of a small dog. Somewhat mouse-like in appearance, it has large glistening black eyes, large ears, and a pointed snout. It is covered with thick, bluish-black fur that is silky to the touch. The creature can change its fur color to match its surroundings. When properly cured, the beguiler’s hide commands high prices in any marketplace.
Beguilers possess razor-sharp retractile claws, enabling the creatures to climb trees and wooden structures with ease. The hairless, prehensile tail of the beguiler aids in climbing, and can be used to throw or wield weapons the size of a short sword or smaller.
Habitat/Society: The beguiler lives in the dry plains or steppes of the Eastern Shaar. Dampness suppresses the creature’s ability to camouflage itself which it can do for 1-4 turns. Unless the creature’s fur is dry, it is incapable of this coloration change. In regions of Toril other than the Eastern Shaar, the beguiler is very rare.
Those two pictures are supposedly of Guardians of the Dwarf Crypt:
Obviously, one of the two is wrong.