Robert Allen Gardner who, with the help of his wife Beatrix “Trixie” Tugendhut, taught Washoe the chimpanzee sign language; has passed away. According to the Reno Gazette-Journal, he passed away after battling a long illness in his home — “The Ranch” located south of Reno, Nevada — on Aug. 20, 2021. He was 91 years […]
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