Worms are cold-blooded animals. Worms can grow a new tail, but not grow a new head if they are cut off. Baby worms are not born. They hatch from cocoons smaller than a grain of rice. If a worm's skin dries out, it will die.
Worms are hermaphrodites.
Each worm has both male and female organs. Then each worm forms an egg capsule in its clitellum. Worms can eat their weight each day.