close up of the red slug (arion rufus), also known as the large red slug, chocolate arion and european red snail, eating leafs in

agriculture animal antenna arion attack biology black body brown closeup contract control crawl creatures damage danger eating european flower garden gastropod green invasion invasive invertebrate land leaf lusitanicus macro mollusc mollusk natural nature outdoor pest plant problem red rufus slimy slow slowly slug snail snailplage vulgaris wet wild wildlife