This is the Large Red Slug (Arion (Arion) rufus), and its slimy kind really like to set up camp in my garden to chomp on my plants. Now most people know if you want to reduce the slug population in your garden you can dig a hole in the ground and bury a small container of beer whereby the slugs will be attracted, fall in and will drown their sorrows, and themselves in the process. Another way is to sprinkle salt on them where they will meet a most horrible gooey death. However, contrary to them dying by salt, I came across this one munching on a crisp this afternoon on my back decking, which I thought was quite an odd thing to witness, to say the least.
This was a beef and onion crisp, yes it was salted, and it could not get enough of it. It devoured the lot, and mopped up any remaining crumbs in one sitting. After desert (too disgusting to mention) it casually slid off between a narrow crack in the decking.
September 2017, Staffordshire, England.