When I found these holes in my reading list, I couldn't quite work out what had happened to it. But James spotted the tiny teeth marks and attributed it to woodworm.
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I had a scout around and found the culprit hiding in my
donkey tail plant. A snail - which explains the mysterious silver trail that appeared across my laptop a few week's ago.
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We made our snail friend comfortable on some onion skins whilst we ate dinner and then released him in the undergrowth on some wasteland nearby. James carefully placed him on a lower leaf, out of the way of a bird's eye view, and we wished him luck.