Hanging Vines are Mobs exclusive to the Hamlet DLC.
They appear in both Deep Rainforest and Gas Rainforest once the player comes close to them. There are two variants of Hanging Vines. One of them is just a plant and can shear with a Shears to provide a Rope, and the other acts like a hostile creature (see image). It knocks out items from the players inventory when attacking. It also eats food left on the ground.