Out of a total of 23 monkeys implanted with Elon Musk’s Neuralink brain chips at the University of California Davis between 2017 and 2020, at least 15 reportedly died.


Via Business Insider and the New York Post, the news comes from the Physicians Committee for Responsible Medicine, an animal-rights group that viewed over 700 pages of documents, veterinary records, and necropsy reports through a public record request at the university.


Neuralink was founded in 2016 with the goal of helping people recover from traumatic brain and spinal cord injuries, curing depression and other mental health disorders, and connecting humans to the internet for everything from music streaming to near-telepathic communication.

The company has often touted its successes, such as a demonstration on a pig in 2020, and a 2021 video of a macaque playing Pong with its mind.


Neuralink chips were implanted by drilling holes into the monkeys’ skulls. One primate developed a bloody skin infection and had to be euthanized. Another was discovered missing fingers and toes, “possibly from self-mutilation or some other unspecified trauma,” and had to be put down.

A third began uncontrollably vomiting shortly after surgery, and days later “appeared to collapse from exhaustion/fatigue.” An autopsy revealed the animal suffered from a brain hemorrhage.