Newborn Lion Cub is Sleepy at Lincoln Park Zoo in Chicago

Henkel's Leaf Tailed Gecko Hatchling at Lincoln Park Zoo

Critically Endangered Red Wolf Pups Born at Lincoln Park Zoo

Baby Gorilla Born on Mother’s Day at Lincoln Park Zoo

Critically Endangered Eastern Black Rhino Born at Lincoln Park Zoo is a Male

Swined, Squealed, and Delivered!

African Penguin Chick Hatched at Lincoln Park Zoo

Siku Meets Talini

New De Brazza's Monkey at Lincoln Park Zoo

Siku and Talini at Walter Family Arctic Tundra

Goeldi's Monkey Born at Lincoln Park Zoo

Endangered Crowned Lemur Born at Lincoln Park Zoo

Critically Endangered Puerto Rican Parrots on Exhibit at Lincoln Park Zoo

Endangered Francois’ Langur Born at Lincoln Park Zoo