Monstrous scorpion

Giant scorpions are a breed of arachnids known for their poisonous stingers. They are found in a variety of climates, but are most numerous in deserts.

Description
Giant scorpions are the size of horses. They are perfectly content with attacking whatever prey is smaller than themselves, including humans.

Combat
Scorpions are active hunters. They track their prey with their keen senses and then grasp it with their scissor-like pincers. Once in the scorpion’s grasp, the prey is stung repeatedly until it stops moving. It is then consumed by the arachnid, whether or not it is still living.

Lairs
Scorpions live in underground burrows. As such, giant scorpions are often encountered in underground ruins or crypts.

Sourcebooks

 * Anauroch: The Empire of Shade
 * Lost Empires of Faerûn