• cynar@lemmy.world
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    2 days ago

    Animals are very rarely completely still. Even the motion of breathing or their heartbeat is enough to create very slight motions. This causes their fur to subtly move and shimmer. Our brain evolved to spot things like that (spotting prey, or predators). It’s piped into the conscious mind without context however. We just get a visual “something is missing/it’s fake” message.