Corrupted spider

These giant arachnids grew in the depths of the Deep Roads, and fed on numerous species of large bats. When the Deep Roads were lost to the darkspawn, they started feeding on Genlocks, and their numbers began to grow exponentially. Some moved up to make their lairs in surface forests, but most remained underground, close to their Blight tainted meals that make them larger and fiercer than they have ever been.