Wolfweed
From Tardis Wiki, the free Doctor Who reference
The Wolfweeds are mobile plants native to Chloris, first shown in The Creature from the Pit.
Wolfweeds are round, green plants covered in vines and leaves. They move by rolling, but they can also jump to reach their prey. Wolfweeds capture their prey by smothering them in packs and wrapping them in a grey, web-like substance. They have an animal-like mentality and hunt down their prey. Several Wolfweeds were tamed by Lady Adrasta for tracking purposes.