Experts are urging people to be on the look out for two new species of killer hammerhead flatworms - which could threaten some earthworm species.
Despite their small 3cm size, these worms are believed to pose a risk to native British species, which gardeners and farmers depend on.
Hammerhead flatworms can kill common garden critters like snails and earthworms, with scientists warning they could evolve into an invasive species, Glasgow Live reports.
