Zilgan



The Zilgans were a species of giant, ancient, spider-like creatures native to the caverns of the Sense Sphere.

Biology
The Zilgans were massive creatures. Some were only the size of a Human, while some had legs which were six-feet long. Like the spiders of Earth, the Zilgans made sticky webs to trap their prey. Since they lived underground, they were sensitive to light.

Unlike true spiders, Zilgans were capable of screaming when in pain. (DWA: The Monsters from Earth)

History
The Zilgans were originally worshipped by the Sensorites, as they were the most ancient creatures on the planet. They would feed their criminals to the Zilgans, and to harm a Zilgan was a severe crime.

The Doctor came to the planet, accidentally arriving in a cave of a Zilgan. Though it was attracted to the TARDIS, he was able to blind it with a light and escape back into the TARDIS. He then mixed up prussic acid and killed the Zilgan. When he later encountered the Sensorites, they captured him and planned to kill him for his crime.

When he escaped the Sensorites, he accidentally attracted more Zilgans, including one which was able to pick up the TARDIS. He was able to escape, though accidentally cutting off the leg of a Zilgan who had its leg through the door. (DWA: The Monsters from Earth)