Over the course of three months, the baby's little hands gradually become semi-open, with fingers becoming able to separate. The baby begins to want to reach out to touch the objects in front of them, and often hears sounds around them, turning their head to look. When they see something they find interesting, they will gaze at it for a short time, observing it. These are all signs of the baby's auditory and visual development beginning to develop.

This series of toys is perfectly suited for three-month-old babies to play with. The O-shaped structure allows babies to easily reach for the toys, and the small hands can shake the toys to produce a pleasant ringing sound. The animals also have built-in crumple paper that makes a rustling sound when touched, which can all help to exercise the development of the baby and bring them different kinds of joy.