Best-selling author Chelsea Clinton will present her new children’s book, Don’t Let Them Disappear: Twelve Endangered Species Across the Globe, at a special event and book signing May 23, 2019 at the San Diego Zoo.

Young patients, their families and invited guests were treated to a visit with some amazing animal ambassadors—including a hedgehog, a great horned owl, and a blue and gold macaw from the Sacramento Zoo—at a gathering at UC Davis Children’s Hospital earlier today (Jan. 10, 2019).