Oomoni Bearvine

The Oomoni bearvine should not exist, and no one knows why it does.
Similar to a venus flytrap, it lies in wait in trees, on the ground, pretty well anywhere, and waits. Along its vines are hundreds of tiny mouths, in a way. It looks like a regular brown vine, but with a pulsing appearance. The tiny mouths glom onto whatever touches them (and is alive) and consumes them, It uses the vine structure like a throat, leading the food to a main root somewhere (usually on the ground or in a large pond). 
If you see a brown vine leaking some sort of brown or red fluid, congratulations, you found a bearvine. Given the thousands of tiny mouths, it has a tendency to... leak whatever it was eating if it's something large.
They are pretty easy to kill, as they can't eat metal or wood. Simply chopping the vine close to the ground will kill it quickly. If there is food in the vine past where you cut it, it will spill it, so make sure you're not below the vine when you do.
They generally live near the Oomoni settlements, because the Oomoni aren't going to remove them. In fact, they grow especially hostile breeds as pets in some parts of the settlement. They have been found as far as the Mirewood but the specimen found there was long dead.