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Experimental rodent modifications on animal bones: (a) Parallel striations caused by incisors dragging over the bone margins, arranged in fan-shaped patterns (white arrow). (b) A “window” created by incisors scraping over the same spot multiple times (black arrow), as modification by captive Degu octodon. (c) Nibbled off edges (white arrows) by mice in a Swiss forest. Only the left lesion exhibits the rodent-typical striations.
