My favorite example of this is the planarian. You can cut its head in half and it will generate two new halves. Same with the tail. Or cut the whole thing into pieces, and each piece will regenerate the whole body.
The hydra too. Me and a friend used to pass time doing debates, and when one of us was too tired to research or argue we'd debate about dumb stuff, and I was a stalwart "the original hydra reproduced into two offspring" much like how single celled organisms "die" when they reproduce
