Known for her love of chimpanzees, Jane Goodall died on Wednesday at age 91 of natural causes, the Jane Goodall Institute announced on its Instagram page. She was in California ahead of a planned speaking engagement in Los Angeles, according to her institute.

"Dr. Goodall’s discoveries as an ethologist revolutionized science, and she was a tireless advocate for the protection and restoration of our natural world," the Jane Goodall Institute said.

"Young Jane immersed herself in books about wild animals and dreamed of a life alongside African wildlife like Tarzan and Dr. Dolittle. At the young age of 23, after having spent the past few years as a waitress and secretary, she finally found a way to make her dream a reality," according to her official biography.

Goodall's studies of wild ch

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