two brown slugs crawling on green cabbage leaves in a garden

39aph39 against arion behavior bodies brown cabbage caterpillar chocolate closeup control crawling creep crop crops damage damaged disease diseases ecology environment europe farmer feeding garden gardening gastropod gastropoda green grow insect interaction invasion invasive invertebrate land leaf leaves lettuce lusitanicus mollusk natural out pest pests plant plot pumpkin red rotten showcasing showing slug slugs snail snailplage snails soil spanish species stand textured their two vibrant