Alien species (Certificate of Destruction)

A spider-like alien species were in a competition with the De'htrexi that took place on Earth. The species controlled cats while the De'htrexi controlled dogs. When the De'htrexi got out of hand and began controlling humans as well, the other species enlisted the Sixth Doctor's help to defeat the De'htrexi. (PROSE: Certificate of Destruction)
Category:Species with unknown names
Category:Psychic species
Category:Sapient arachnid species