FurReal Friends Sweet Jammiecorn Unicorn Interactive Plush Light-up 35+ Sounds

This is pre-owned by my daughter. It used to work, but for the life of me, I cannot find where to change its batteries. If you push the horn down it closes and opens its eyes. It's supposed to talk and the horn light up, but as I said, I can't find where to change its batteries to make sure it still works.