Land Planarian (Hammerhead Worm fragment or Soil Flatworm)

Damp soil, under logs, rocks, leaf litter, and in gardens; requires high humidity and moisture to survive.

Carnivorous predator; feeds on earthworms, slugs, insect larvae, and sometimes other flatworms.

Nocturnal hunters that track prey using chemoreceptors. They move by gliding over a mucus trail. They can often regenerate from fragments if cut.

Risks: Can be invasive and disruptive to local ecosystems by decimating beneficial earthworm populations. Some species (like Bipalium) produce tetrodotoxin, a neurotoxin, so they should not be handled with bare hands. Benefits: None significant in a garden setting; generally considered a pest to soil health.