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I once argued for dinosaurs using stone tools, in the form of gastroliths. So what if the tool is only held internally and manipulated by the stomach, why does

I once argued for dinosaurs using stone tools, in the form of gastroliths. So what if the tool is only held internally and manipulated by the stomach, why does that not count? But here I'm really questioning the meaning of "tool" and use. I think it's all very debatable, even with apes, especially when you get to the part about what you're trying to imply by observing the animal uses tools. (The mirror test is similarly sketchy in meaning, being passed by certain tiny fish but not by dogs.)

hinkley 3y ago
Dogs understand “look at that” which some think is why you can see our sclera. Enhances nonverbal hunting communication. Some monkeys do not understand meaningful glances or pointing. We also know crows and wolves can mutualistically hunt. Crows narc and then collect the leavings. Maybe crows didn’t used to be as smart as they are either…