Slug or snake?  It was getting dark when we saw it.   It was moving at a snail’s pace, though that was enough to make the picture blurry at the creature’s tail.  It was about 4″ (10 cm) long.  The front end looks the same as Arion lusitanicus, the so-called Iberian slug that reached Norway in 1988 but then took ten years to reach our garden from the other side of the lake (they went the pretty way, along the shore, not through the middle).  The back end is more like the hoggorm, or adder, that has a black-and-khaki zigzag pattern.

Slugs are supposed to be very destructive, but I haven’t ever seen any damage around here that wasn’t caused by either humans (litter) or cows (they like knocking over our garbage cans and going through the contents).  In Norway, Arion lusitanicus is also called the drepersnegl or mordersnegl, the killer- or murderer slug.  I feel quite confident I could take one on.  Snegl is used in Norway to cover both slugs and snails.  We have tons of snails too, and they never seem to eat a thing.  Either they’re all anorexic or it’s a myth that gastropods gobble up people’s gardens.