We all learn at a very early age that trees are living things and should not be cut down with wanton abandon. If you forget that lesson, you will get a vivid — and rather off-putting — reminder if you try to cut the tree that bleeds.

The desert bloodwood tree (Corymbia opaca) and the African teak tree (Pterocarpus angolensis) each produce a dark red liquid that looks disturbingly like blood.

Watch this somewhat-shocking video of a bloodwood tree being cut with a chainsaw: