Like, you can see a leaf on and think “wow, that’s a beautiful leaf”. You may even pick it up to admire it (especially if you’re a child or a biologist). You wouldn’t do that with a strand of human hair, a human nail clipping, or even less with the parts that aren’t supposed to come off like hands or eyes.
Have you heard of Body Worlds? Seeing the electric jellyfish that pilots the muscle and bones mech was pretty nifty.
Also, I’ve always had a few professor eyebrows. One came out so I brought it to a coworker. To better understand why it had fallen out, I borrowed her scissors and snipped it in half. “Autopsy!”