Craktor

The Craktors were a species of massive Arachnid-like creatures.

Biology
The Craktors were massive creatures, larger than a car and with bulletproof armour. They had 11 limbs; 8 legs, 2 powerful claws and a sharp spine-like limb at the front. They also had 5 red eyes; four smaller eyes and one larger one above. (TWM: Ma and Par)

Life Cycle
The Craktors were a sexually dimorphic species, with the males (or "Bull-Craktors") being easily identified from females. After mating, the female would lay eggs, which were capable of adaptive camouflage. For example, at the Pontyvale Golf Course the eggs took the appearance of golf balls. The Bull-Craktor would guard the nest and female, killing anything that got too close. (TWM: Ma and Par)

History
At some point, a pair of Craktors arrived outside Cardiff, where they made a nest at the Pontyvale Golf Course. The Bull-Craktor killed several people, forcing the Golf Course to shut down and for Torchwood Three to be called in. When the gardener showed them where the creature dragged the bodies, he was killed by the Bull-Craktor. As their bullets were effective, Jack Harkness rammed the Craktor with a golf cart and lured it to the nearby swimming pool. Holding a plugged-in lamp and standing near the pool, Jack was able to electrocute the Craktor when it charged him. At this point, the Craktor's eggs started hatching and the female Craktor awoke. (TWM: Ma and Par)