Do leopard geckos grow their toes back after losing them?

The teeth are very tiny and so while sharp enough to grab onto a small insect, as he slams his mouth shut, they usually do not puncture human skin. If a gecko is really convinced a small finger is a tasty worm to eat: you may find an adult with the strength of his jaw can draw blood as he scratches the surface of the skin but it will not be a deep wound. If he catches the side of your hand however he will realise not tasty snack and not clamp down hard.