• Updated

In this handout photo released by Humane World for Animals, a chimpanzee formerly used in research receives a comprehensive health check at a retirement sanctuary for chimpanzees, in Bapakwali, Liberia, on Aug. 25, 2026. (Humane World for Animals via AP)

  • Updated

In this handout photo released by Humane World for Animals, a chimpanzee formerly used in research receives a comprehensive health check at a retirement sanctuary for chimpanzees, in Bapakwali, Liberia, on Aug. 25, 2026. (Humane World for Animals via AP)

  • Updated

In this handout photo released by Humane World for Animals, a chimpanzee formerly used in research receives a comprehensive health check at a retirement sanctuary for chimpanzees, in Bapakwali, Liberia, on Aug. 25, 2026. (Humane World for Animals via AP)

  • Updated

In this handout photo released by Humane World for Animals, a chimpanzee formerly used in research receives a comprehensive health check at a retirement sanctuary for chimpanzees, in Bapakwali, Liberia, Tuesday, Aug. 25, 2026. (Humane World for Animals via AP)