
monkey misery at the university of minnesota:
screws are drilled into their skulls!
for illustrative purposes only
Update (September 1, 2026): Victory! The University of Minnesota has confirmed that experimenter Geoff Ghose “no longer works with nonhuman primates.” This comes after PETA exposed Ghose’s incompetence as he carried out experiments in which monkeys’ scalps were cut into and metal headposts bolted to their heads. We also met with local law enforcement officials and gave evidence of apparent animal welfare violations in his lab. Please take action below to demand that the school permanently bar Jan Zimmermann and Matt Johnson from experimenting on monkeys.
Original post:
Something was extremely wrong with Everett, a monkey who was caged in a University of Minnesota laboratory.
According to reports about Everett’s health, the red flags were flying high. One of his arms was weak, maybe from a stroke. His hair was thinning quickly. He vomited. He shook his head violently and pressed it against the bars of his cage again and again.

Being trapped in a scary laboratory 24/7 would make us sick and miserable, too. But there’s another explanation for Everett’s health problems. He had about 20 metal screws drilled into his skull, which sank so deeply they pierced his brain. 😨
Documents reveal that neuroscience professor Jan Zimmermann performed this botched surgery on Everett—and then tried to cover it up—before Everett was eventually killed!

Zimmermann and Matt Johnson, another neuroscience professor, casually conduct these kinds of experiments like it’s nothing. They slice open monkeys’ scalps, remove part of their skulls, and attach stuff like headposts so that they can mess with their brains for months or years. Gandalf, a monkey in Geoff Ghose’s laboratory, reportedly had his headpost sheared off during a cage transfer, ripping the device from his skull.
Ponyo, a monkey in Johnson’s laboratory, reportedly suffered from an infection for weeks, with blood leaking from one of her screw holes. While Ponyo’s headpost was being set up, affixed to the hardware of a restraint chair, the device reportedly detached from her skull, presumably because the infection had weakened the underlying bone.

Ghose also implanted a chamber onto the skull of a monkey named Bilbo, but he screwed it up and accidentally stabbed Bilbo’s brain when he tried to fix it. During the procedure, Bilbo’s head slipped, and a metal bar jammed into his eye. Bilbo’s chamber later fell off, which exposed his brain, and the head veterinarian waited three days before performing surgery.

Three days. With an exposed brain. How can anyone treat anyone like this?
help end the experiments!
Everett, Gandalf, Ponyo, and Bilbo have gone through hell—and more monkeys will follow unless we pull up for them. Please demand a permanent end to these experiments! 🚨🚨🚨