The uneven shape of the monkey makes it a great chewer! Transition training from "sucking" to "chewing" during weaning is very important. The unique shape stimulates the teeth and gums and teaches the sensation of chewing. Monkey shape: Uneven shape stimulates gums and fingertips. Ring shape: Has holes for hanging on hooks for drying Convenient stand: Can be stored standing up. Monkey feet: easy to grasp for small hands