I remember in junior high, we kept a pack of much smaller and cuter planarians [1] for a science class. We cut them up into pieces (sorry worms!) and they reall

I remember in junior high, we kept a pack of much smaller and cuter planarians [1] for a science class. We cut them up into pieces (sorry worms!) and they really do regenerate! Fascinating creatures. [1] https://en.wikipedia.org/wiki/Dugesia_japonica https://en.wikipedia.org/wiki/Dugesia_japonica