CIRCLE WITH A DOT

@jonny as for not-quite-animals, there is a whole set of plants (eg https://en.wikipedia.org/wiki/Amorphophallus_titanum) that instead of flowering nicely-scented stuff to attract bees or whatever, instead produce a massive disgusting corpse-scented flower that attracts scavenging insects

@jonny not sure how weird this is, but female Rhizocephala barnacles (https://en.wikipedia.org/wiki/Rhizocephala) inject themselves into crabs and grow their body into some sort of root-like system throughout the crab’s body – and males then inject themselves into the female which injected themselves into the poor crab