>>81634775
>I'd probably be pretty spooked if I saw a tree bleeding.
Gotta carve a nice face in them to make them extra spooky :). Speaking of blood though, there are kinds of tunicates that have vanadium based blood. https://en.wikipedia.org/wiki/Vanabin
It's a greenish color too. Vanadium is somewhat toxic, but it is interesting to look into for what it can do biologically. People can also make batteries using it, which I've thought about.