To regenerate a head, you first have to know where your tail is Planaria can't replace a missing head until after the tail develops sufficiently. John Timmer – Apr 18, 2025 2:40 pm ...

A “joyful” dog wagged his tail so hard, it had to be amputated. Now, Marley has healed and is up for adoption at a North Carolina animal shelter. “Marley is MUCH happier with his little nub ...